Finding the Fourth Proportional to 23,425.19, 32,326.86 and 12,815

Step by Step Solution

1. Step 1: Write the proportion equation
   23,425.19 : 32,326.86 = 12,815 : x
2. Step 2: Convert to fraction form
   23,425.19/32,326.86 = 12,815/x
3. Step 3: Cross multiply
   23,425.19x = 32,326.86 × 12,815
4. Step 4: Simplify right side
   23,425.19x = 414,268,710.90
5. Step 5: Solve for x
   x = 414,268,710.90/23,425.19
6. Step 6: Final answer
   x = 17,684.75