Finding the Fourth Proportional to 9,111.38, 12,573.89 and 5,132.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.38 : 12,573.89 = 5,132.39 : x
2. Step 2: Convert to fraction form
   9,111.38/12,573.89 = 5,132.39/x
3. Step 3: Cross multiply
   9,111.38x = 12,573.89 × 5,132.39
4. Step 4: Simplify right side
   9,111.38x = 64,534,018.77
5. Step 5: Solve for x
   x = 64,534,018.77/9,111.38
6. Step 6: Final answer
   x = 7,082.80