Finding the Fourth Proportional to 17,875.60, 24,668.34 and 9,917.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,875.60 : 24,668.34 = 9,917.89 : x
2. Step 2: Convert to fraction form
   17,875.60/24,668.34 = 9,917.89/x
3. Step 3: Cross multiply
   17,875.60x = 24,668.34 × 9,917.89
4. Step 4: Simplify right side
   17,875.60x = 244,657,882.60
5. Step 5: Solve for x
   x = 244,657,882.60/17,875.60
6. Step 6: Final answer
   x = 13,686.69