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Finding the Fourth Proportional to 8,805.36, 13,206.80 and 3,257.78

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Solution

The fourth proportional to 8,805.36, 13,206.80 and 3,257.78 is: 4,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.36 : 13,206.80 = 3,257.78 : x
  2. Step 2: Convert to fraction form
    8,805.36/13,206.80 = 3,257.78/x
  3. Step 3: Cross multiply
    8,805.36x = 13,206.80 × 3,257.78
  4. Step 4: Simplify right side
    8,805.36x = 43,024,766.58
  5. Step 5: Solve for x
    x = 43,024,766.58/8,805.36
  6. Step 6: Final answer
    x = 4,886.20

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