Finding the Fourth Proportional to 22,142.15, 30,555.28 and 12,070.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,142.15 : 30,555.28 = 12,070.38 : x
2. Step 2: Convert to fraction form
   22,142.15/30,555.28 = 12,070.38/x
3. Step 3: Cross multiply
   22,142.15x = 30,555.28 × 12,070.38
4. Step 4: Simplify right side
   22,142.15x = 368,813,840.61
5. Step 5: Solve for x
   x = 368,813,840.61/22,142.15
6. Step 6: Final answer
   x = 16,656.64