Finding the Fourth Proportional to 10,981.38, 15,155.49 and 7,207.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.38 : 15,155.49 = 7,207.59 : x
2. Step 2: Convert to fraction form
   10,981.38/15,155.49 = 7,207.59/x
3. Step 3: Cross multiply
   10,981.38x = 15,155.49 × 7,207.59
4. Step 4: Simplify right side
   10,981.38x = 109,234,558.17
5. Step 5: Solve for x
   x = 109,234,558.17/10,981.38
6. Step 6: Final answer
   x = 9,947.25