Finding the Fourth Proportional to 13,264.83, 18,307.23 and 8,562.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,264.83 : 18,307.23 = 8,562.78 : x
2. Step 2: Convert to fraction form
   13,264.83/18,307.23 = 8,562.78/x
3. Step 3: Cross multiply
   13,264.83x = 18,307.23 × 8,562.78
4. Step 4: Simplify right side
   13,264.83x = 156,760,782.90
5. Step 5: Solve for x
   x = 156,760,782.90/13,264.83
6. Step 6: Final answer
   x = 11,817.78