Finding the Fourth Proportional to 9,981.31, 13,772.70 and 5,732.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.31 : 13,772.70 = 5,732.56 : x
2. Step 2: Convert to fraction form
   9,981.31/13,772.70 = 5,732.56/x
3. Step 3: Cross multiply
   9,981.31x = 13,772.70 × 5,732.56
4. Step 4: Simplify right side
   9,981.31x = 78,952,829.11
5. Step 5: Solve for x
   x = 78,952,829.11/9,981.31
6. Step 6: Final answer
   x = 7,910.07