Finding the Fourth Proportional to 17,742.55, 26,616.47 and 5,261.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,742.55 : 26,616.47 = 5,261.10 : x
2. Step 2: Convert to fraction form
   17,742.55/26,616.47 = 5,261.10/x
3. Step 3: Cross multiply
   17,742.55x = 26,616.47 × 5,261.10
4. Step 4: Simplify right side
   17,742.55x = 140,031,978.31
5. Step 5: Solve for x
   x = 140,031,978.31/17,742.55
6. Step 6: Final answer
   x = 7,892.44