Finding the Fourth Proportional to 12,003.06, 16,560.90 and 7,754.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,003.06 : 16,560.90 = 7,754.31 : x
2. Step 2: Convert to fraction form
   12,003.06/16,560.90 = 7,754.31/x
3. Step 3: Cross multiply
   12,003.06x = 16,560.90 × 7,754.31
4. Step 4: Simplify right side
   12,003.06x = 128,418,352.48
5. Step 5: Solve for x
   x = 128,418,352.48/12,003.06
6. Step 6: Final answer
   x = 10,698.80