Finding the Fourth Proportional to 12,100.88, 16,699.68 and 8,280.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.88 : 16,699.68 = 8,280.53 : x
2. Step 2: Convert to fraction form
   12,100.88/16,699.68 = 8,280.53/x
3. Step 3: Cross multiply
   12,100.88x = 16,699.68 × 8,280.53
4. Step 4: Simplify right side
   12,100.88x = 138,282,117.73
5. Step 5: Solve for x
   x = 138,282,117.73/12,100.88
6. Step 6: Final answer
   x = 11,427.45