Finding the Fourth Proportional to 9,124.78, 12,592.17 and 5,145.93

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.78 : 12,592.17 = 5,145.93 : x
2. Step 2: Convert to fraction form
   9,124.78/12,592.17 = 5,145.93/x
3. Step 3: Cross multiply
   9,124.78x = 12,592.17 × 5,145.93
4. Step 4: Simplify right side
   9,124.78x = 64,798,425.37
5. Step 5: Solve for x
   x = 64,798,425.37/9,124.78
6. Step 6: Final answer
   x = 7,101.37