Finding the Fourth Proportional to 9,124.09, 12,592.37 and 5,145.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.09 : 12,592.37 = 5,145.12 : x
2. Step 2: Convert to fraction form
   9,124.09/12,592.37 = 5,145.12/x
3. Step 3: Cross multiply
   9,124.09x = 12,592.37 × 5,145.12
4. Step 4: Simplify right side
   9,124.09x = 64,789,267.60
5. Step 5: Solve for x
   x = 64,789,267.60/9,124.09
6. Step 6: Final answer
   x = 7,100.90