Finding the Fourth Proportional to 22,457.01, 30,990.87 and 12,385.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,457.01 : 30,990.87 = 12,385.83 : x
2. Step 2: Convert to fraction form
   22,457.01/30,990.87 = 12,385.83/x
3. Step 3: Cross multiply
   22,457.01x = 30,990.87 × 12,385.83
4. Step 4: Simplify right side
   22,457.01x = 383,847,647.37
5. Step 5: Solve for x
   x = 383,847,647.37/22,457.01
6. Step 6: Final answer
   x = 17,092.55