Finding the Fourth Proportional to 22,307.52, 30,780.88 and 12,874.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,307.52 : 30,780.88 = 12,874.32 : x
2. Step 2: Convert to fraction form
   22,307.52/30,780.88 = 12,874.32/x
3. Step 3: Cross multiply
   22,307.52x = 30,780.88 × 12,874.32
4. Step 4: Simplify right side
   22,307.52x = 396,282,899.00
5. Step 5: Solve for x
   x = 396,282,899.00/22,307.52
6. Step 6: Final answer
   x = 17,764.54