Finding the Fourth Proportional to 10,520,979.53, 14,528,978.53 and 9,947,801.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,520,979.53 : 14,528,978.53 = 9,947,801.62 : x
2. Step 2: Convert to fraction form
   10,520,979.53/14,528,978.53 = 9,947,801.62/x
3. Step 3: Cross multiply
   10,520,979.53x = 14,528,978.53 × 9,947,801.62
4. Step 4: Simplify right side
   10,520,979.53x = 144,531,396,096,487.25
5. Step 5: Solve for x
   x = 144,531,396,096,487.25/10,520,979.53
6. Step 6: Final answer
   x = 13,737,446.76