Finding the Fourth Proportional to 17,124.02, 25,685.96 and 5,438.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,124.02 : 25,685.96 = 5,438.15 : x
2. Step 2: Convert to fraction form
   17,124.02/25,685.96 = 5,438.15/x
3. Step 3: Cross multiply
   17,124.02x = 25,685.96 × 5,438.15
4. Step 4: Simplify right side
   17,124.02x = 139,683,947.75
5. Step 5: Solve for x
   x = 139,683,947.75/17,124.02
6. Step 6: Final answer
   x = 8,157.20