Finding the Fourth Proportional to 12,816.61, 19,225.20 and 3,932.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,816.61 : 19,225.20 = 3,932.12 : x
2. Step 2: Convert to fraction form
   12,816.61/19,225.20 = 3,932.12/x
3. Step 3: Cross multiply
   12,816.61x = 19,225.20 × 3,932.12
4. Step 4: Simplify right side
   12,816.61x = 75,595,793.42
5. Step 5: Solve for x
   x = 75,595,793.42/12,816.61
6. Step 6: Final answer
   x = 5,898.27