Finding the Fourth Proportional to 10,938.88, 16,383.69 and 7,666.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938.88 : 16,383.69 = 7,666.59 : x
2. Step 2: Convert to fraction form
   10,938.88/16,383.69 = 7,666.59/x
3. Step 3: Cross multiply
   10,938.88x = 16,383.69 × 7,666.59
4. Step 4: Simplify right side
   10,938.88x = 125,606,952.00
5. Step 5: Solve for x
   x = 125,606,952.00/10,938.88
6. Step 6: Final answer
   x = 11,482.62