Finding the Fourth Proportional to 17,008.90, 25,495.72 and 12,317.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,008.90 : 25,495.72 = 12,317.18 : x
2. Step 2: Convert to fraction form
   17,008.90/25,495.72 = 12,317.18/x
3. Step 3: Cross multiply
   17,008.90x = 25,495.72 × 12,317.18
4. Step 4: Simplify right side
   17,008.90x = 314,035,372.47
5. Step 5: Solve for x
   x = 314,035,372.47/17,008.90
6. Step 6: Final answer
   x = 18,463.00