Finding the Fourth Proportional to 17,910.88, 26,845.42 and 13,160.16

Step by Step Solution

1. Step 1: Write the proportion equation
   17,910.88 : 26,845.42 = 13,160.16 : x
2. Step 2: Convert to fraction form
   17,910.88/26,845.42 = 13,160.16/x
3. Step 3: Cross multiply
   17,910.88x = 26,845.42 × 13,160.16
4. Step 4: Simplify right side
   17,910.88x = 353,290,022.47
5. Step 5: Solve for x
   x = 353,290,022.47/17,910.88
6. Step 6: Final answer
   x = 19,724.88