Finding the Fourth Proportional to 10,111.88, 15,149.32 and 7,331.65

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.88 : 15,149.32 = 7,331.65 : x
2. Step 2: Convert to fraction form
   10,111.88/15,149.32 = 7,331.65/x
3. Step 3: Cross multiply
   10,111.88x = 15,149.32 × 7,331.65
4. Step 4: Simplify right side
   10,111.88x = 111,069,455.78
5. Step 5: Solve for x
   x = 111,069,455.78/10,111.88
6. Step 6: Final answer
   x = 10,984.05