Finding the Fourth Proportional to 22,457.30, 30,989.64 and 12,385.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,457.30 : 30,989.64 = 12,385.82 : x
2. Step 2: Convert to fraction form
   22,457.30/30,989.64 = 12,385.82/x
3. Step 3: Cross multiply
   22,457.30x = 30,989.64 × 12,385.82
4. Step 4: Simplify right side
   22,457.30x = 383,832,102.90
5. Step 5: Solve for x
   x = 383,832,102.90/22,457.30
6. Step 6: Final answer
   x = 17,091.64