Finding the Fourth Proportional to 17,115.20, 25,656.60 and 5,422.04

Step by Step Solution

1. Step 1: Write the proportion equation
   17,115.20 : 25,656.60 = 5,422.04 : x
2. Step 2: Convert to fraction form
   17,115.20/25,656.60 = 5,422.04/x
3. Step 3: Cross multiply
   17,115.20x = 25,656.60 × 5,422.04
4. Step 4: Simplify right side
   17,115.20x = 139,111,111.46
5. Step 5: Solve for x
   x = 139,111,111.46/17,115.20
6. Step 6: Final answer
   x = 8,127.93