Finding the Fourth Proportional to 17,116.12, 25,645 and 13,830.76

Step by Step Solution

1. Step 1: Write the proportion equation
   17,116.12 : 25,645 = 13,830.76 : x
2. Step 2: Convert to fraction form
   17,116.12/25,645 = 13,830.76/x
3. Step 3: Cross multiply
   17,116.12x = 25,645 × 13,830.76
4. Step 4: Simplify right side
   17,116.12x = 354,689,840.20
5. Step 5: Solve for x
   x = 354,689,840.20/17,116.12
6. Step 6: Final answer
   x = 20,722.56