Finding the Fourth Proportional to 32,610.90, 48,932.55 and 12,890.10

Step by Step Solution

1. Step 1: Write the proportion equation
   32,610.90 : 48,932.55 = 12,890.10 : x
2. Step 2: Convert to fraction form
   32,610.90/48,932.55 = 12,890.10/x
3. Step 3: Cross multiply
   32,610.90x = 48,932.55 × 12,890.10
4. Step 4: Simplify right side
   32,610.90x = 630,745,462.76
5. Step 5: Solve for x
   x = 630,745,462.76/32,610.90
6. Step 6: Final answer
   x = 19,341.55