Finding the Fourth Proportional to 10,980.88, 15,155.85 and 7,445.23

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.88 : 15,155.85 = 7,445.23 : x
2. Step 2: Convert to fraction form
   10,980.88/15,155.85 = 7,445.23/x
3. Step 3: Cross multiply
   10,980.88x = 15,155.85 × 7,445.23
4. Step 4: Simplify right side
   10,980.88x = 112,838,789.10
5. Step 5: Solve for x
   x = 112,838,789.10/10,980.88
6. Step 6: Final answer
   x = 10,275.93