Finding the Fourth Proportional to 12,781.83, 17,627.63 and 8,307.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,781.83 : 17,627.63 = 8,307.14 : x
2. Step 2: Convert to fraction form
   12,781.83/17,627.63 = 8,307.14/x
3. Step 3: Cross multiply
   12,781.83x = 17,627.63 × 8,307.14
4. Step 4: Simplify right side
   12,781.83x = 146,435,060.60
5. Step 5: Solve for x
   x = 146,435,060.60/12,781.83
6. Step 6: Final answer
   x = 11,456.50