Finding the Fourth Proportional to 12,906,380.88, 19,359,439.20 and 3,321,722.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,906,380.88 : 19,359,439.20 = 3,321,722.16 : x
2. Step 2: Convert to fraction form
   12,906,380.88/19,359,439.20 = 3,321,722.16/x
3. Step 3: Cross multiply
   12,906,380.88x = 19,359,439.20 × 3,321,722.16
4. Step 4: Simplify right side
   12,906,380.88x = 64,306,678,195,812.67
5. Step 5: Solve for x
   x = 64,306,678,195,812.67/12,906,380.88
6. Step 6: Final answer
   x = 4,982,549.24