Finding the Fourth Proportional to 17,666.52, 26,496.72 and 5,186.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,666.52 : 26,496.72 = 5,186.34 : x
2. Step 2: Convert to fraction form
   17,666.52/26,496.72 = 5,186.34/x
3. Step 3: Cross multiply
   17,666.52x = 26,496.72 × 5,186.34
4. Step 4: Simplify right side
   17,666.52x = 137,420,998.80
5. Step 5: Solve for x
   x = 137,420,998.80/17,666.52
6. Step 6: Final answer
   x = 7,778.61