Finding the Fourth Proportional to 22,430.80, 30,958.98 and 12,877.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,430.80 : 30,958.98 = 12,877.15 : x
2. Step 2: Convert to fraction form
   22,430.80/30,958.98 = 12,877.15/x
3. Step 3: Cross multiply
   22,430.80x = 30,958.98 × 12,877.15
4. Step 4: Simplify right side
   22,430.80x = 398,663,429.31
5. Step 5: Solve for x
   x = 398,663,429.31/22,430.80
6. Step 6: Final answer
   x = 17,773.04