Finding the Fourth Proportional to 9,124.07, 12,591.01 and 5,145.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.07 : 12,591.01 = 5,145.32 : x
2. Step 2: Convert to fraction form
   9,124.07/12,591.01 = 5,145.32/x
3. Step 3: Cross multiply
   9,124.07x = 12,591.01 × 5,145.32
4. Step 4: Simplify right side
   9,124.07x = 64,784,775.57
5. Step 5: Solve for x
   x = 64,784,775.57/9,124.07
6. Step 6: Final answer
   x = 7,100.43