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Finding the Fourth Proportional to 8,670.61, 11,965.41 and 4,691.80

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Solution

The fourth proportional to 8,670.61, 11,965.41 and 4,691.80 is: 6,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.61 : 11,965.41 = 4,691.80 : x
  2. Step 2: Convert to fraction form
    8,670.61/11,965.41 = 4,691.80/x
  3. Step 3: Cross multiply
    8,670.61x = 11,965.41 × 4,691.80
  4. Step 4: Simplify right side
    8,670.61x = 56,139,310.64
  5. Step 5: Solve for x
    x = 56,139,310.64/8,670.61
  6. Step 6: Final answer
    x = 6,474.67

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