Finding the Fourth Proportional to 17,815.60, 24,580.91 and 10,642.58

Step by Step Solution

1. Step 1: Write the proportion equation
   17,815.60 : 24,580.91 = 10,642.58 : x
2. Step 2: Convert to fraction form
   17,815.60/24,580.91 = 10,642.58/x
3. Step 3: Cross multiply
   17,815.60x = 24,580.91 × 10,642.58
4. Step 4: Simplify right side
   17,815.60x = 261,604,301.15
5. Step 5: Solve for x
   x = 261,604,301.15/17,815.60
6. Step 6: Final answer
   x = 14,684.00