Finding the Fourth Proportional to 17,061.22, 25,557.72 and 13,557.16

Step by Step Solution

1. Step 1: Write the proportion equation
   17,061.22 : 25,557.72 = 13,557.16 : x
2. Step 2: Convert to fraction form
   17,061.22/25,557.72 = 13,557.16/x
3. Step 3: Cross multiply
   17,061.22x = 25,557.72 × 13,557.16
4. Step 4: Simplify right side
   17,061.22x = 346,490,099.28
5. Step 5: Solve for x
   x = 346,490,099.28/17,061.22
6. Step 6: Final answer
   x = 20,308.64