Finding the Fourth Proportional to 10,981.17, 15,146.73 and 7,007.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.17 : 15,146.73 = 7,007.31 : x
2. Step 2: Convert to fraction form
   10,981.17/15,146.73 = 7,007.31/x
3. Step 3: Cross multiply
   10,981.17x = 15,146.73 × 7,007.31
4. Step 4: Simplify right side
   10,981.17x = 106,137,832.60
5. Step 5: Solve for x
   x = 106,137,832.60/10,981.17
6. Step 6: Final answer
   x = 9,665.44