Finding the Fourth Proportional to 22,623.89, 31,221.06 and 12,552.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,623.89 : 31,221.06 = 12,552.31 : x
2. Step 2: Convert to fraction form
   22,623.89/31,221.06 = 12,552.31/x
3. Step 3: Cross multiply
   22,623.89x = 31,221.06 × 12,552.31
4. Step 4: Simplify right side
   22,623.89x = 391,896,423.65
5. Step 5: Solve for x
   x = 391,896,423.65/22,623.89
6. Step 6: Final answer
   x = 17,322.24