Finding the Fourth Proportional to 22,152.15, 30,567.11 and 12,590.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,152.15 : 30,567.11 = 12,590.78 : x
2. Step 2: Convert to fraction form
   22,152.15/30,567.11 = 12,590.78/x
3. Step 3: Cross multiply
   22,152.15x = 30,567.11 × 12,590.78
4. Step 4: Simplify right side
   22,152.15x = 384,863,541.46
5. Step 5: Solve for x
   x = 384,863,541.46/22,152.15
6. Step 6: Final answer
   x = 17,373.64