Finding the Fourth Proportional to 11,100.06, 16,599.50 and 8,290.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,100.06 : 16,599.50 = 8,290.82 : x
2. Step 2: Convert to fraction form
   11,100.06/16,599.50 = 8,290.82/x
3. Step 3: Cross multiply
   11,100.06x = 16,599.50 × 8,290.82
4. Step 4: Simplify right side
   11,100.06x = 137,623,466.59
5. Step 5: Solve for x
   x = 137,623,466.59/11,100.06
6. Step 6: Final answer
   x = 12,398.44