Finding the Fourth Proportional to 22,307.31, 30,785.71 and 12,746.97

Step by Step Solution

1. Step 1: Write the proportion equation
   22,307.31 : 30,785.71 = 12,746.97 : x
2. Step 2: Convert to fraction form
   22,307.31/30,785.71 = 12,746.97/x
3. Step 3: Cross multiply
   22,307.31x = 30,785.71 × 12,746.97
4. Step 4: Simplify right side
   22,307.31x = 392,424,521.80
5. Step 5: Solve for x
   x = 392,424,521.80/22,307.31
6. Step 6: Final answer
   x = 17,591.75