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Finding the Fourth Proportional to 8,958.08, 12,361.46 and 4,978.95

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Solution

The fourth proportional to 8,958.08, 12,361.46 and 4,978.95 is: 6,870.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.08 : 12,361.46 = 4,978.95 : x
  2. Step 2: Convert to fraction form
    8,958.08/12,361.46 = 4,978.95/x
  3. Step 3: Cross multiply
    8,958.08x = 12,361.46 × 4,978.95
  4. Step 4: Simplify right side
    8,958.08x = 61,547,066.37
  5. Step 5: Solve for x
    x = 61,547,066.37/8,958.08
  6. Step 6: Final answer
    x = 6,870.57

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