Finding the Fourth Proportional to 17,010.90, 25,498.72 and 12,319.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,010.90 : 25,498.72 = 12,319.18 : x
2. Step 2: Convert to fraction form
   17,010.90/25,498.72 = 12,319.18/x
3. Step 3: Cross multiply
   17,010.90x = 25,498.72 × 12,319.18
4. Step 4: Simplify right side
   17,010.90x = 314,123,321.45
5. Step 5: Solve for x
   x = 314,123,321.45/17,010.90
6. Step 6: Final answer
   x = 18,466.00