Finding the Fourth Proportional to 22,650.67, 31,258.35 and 12,580.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,650.67 : 31,258.35 = 12,580.05 : x
2. Step 2: Convert to fraction form
   22,650.67/31,258.35 = 12,580.05/x
3. Step 3: Cross multiply
   22,650.67x = 31,258.35 × 12,580.05
4. Step 4: Simplify right side
   22,650.67x = 393,231,543.02
5. Step 5: Solve for x
   x = 393,231,543.02/22,650.67
6. Step 6: Final answer
   x = 17,360.70