Finding the Fourth Proportional to 22,323.42, 33,411.42 and 12,312.90

Step by Step Solution

1. Step 1: Write the proportion equation
   22,323.42 : 33,411.42 = 12,312.90 : x
2. Step 2: Convert to fraction form
   22,323.42/33,411.42 = 12,312.90/x
3. Step 3: Cross multiply
   22,323.42x = 33,411.42 × 12,312.90
4. Step 4: Simplify right side
   22,323.42x = 411,391,473.32
5. Step 5: Solve for x
   x = 411,391,473.32/22,323.42
6. Step 6: Final answer
   x = 18,428.69