Finding the Fourth Proportional to 23,646.18, 32,631.30 and 12,891.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,646.18 : 32,631.30 = 12,891.15 : x
2. Step 2: Convert to fraction form
   23,646.18/32,631.30 = 12,891.15/x
3. Step 3: Cross multiply
   23,646.18x = 32,631.30 × 12,891.15
4. Step 4: Simplify right side
   23,646.18x = 420,654,983.00
5. Step 5: Solve for x
   x = 420,654,983.00/23,646.18
6. Step 6: Final answer
   x = 17,789.55