Finding the Fourth Proportional to 12,307.55, 17,006.63 and 8,764.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,307.55 : 17,006.63 = 8,764.61 : x
2. Step 2: Convert to fraction form
   12,307.55/17,006.63 = 8,764.61/x
3. Step 3: Cross multiply
   12,307.55x = 17,006.63 × 8,764.61
4. Step 4: Simplify right side
   12,307.55x = 149,056,350.51
5. Step 5: Solve for x
   x = 149,056,350.51/12,307.55
6. Step 6: Final answer
   x = 12,110.97