Finding the Fourth Proportional to 22,147.38, 30,565.98 and 12,588.70

Step by Step Solution

1. Step 1: Write the proportion equation
   22,147.38 : 30,565.98 = 12,588.70 : x
2. Step 2: Convert to fraction form
   22,147.38/30,565.98 = 12,588.70/x
3. Step 3: Cross multiply
   22,147.38x = 30,565.98 × 12,588.70
4. Step 4: Simplify right side
   22,147.38x = 384,786,019.29
5. Step 5: Solve for x
   x = 384,786,019.29/22,147.38
6. Step 6: Final answer
   x = 17,373.88