Finding the Fourth Proportional to 5,523.30, 8,326.31 and 5,156.64

Step by Step Solution

1. Step 1: Write the proportion equation
   5,523.30 : 8,326.31 = 5,156.64 : x
2. Step 2: Convert to fraction form
   5,523.30/8,326.31 = 5,156.64/x
3. Step 3: Cross multiply
   5,523.30x = 8,326.31 × 5,156.64
4. Step 4: Simplify right side
   5,523.30x = 42,935,757.42
5. Step 5: Solve for x
   x = 42,935,757.42/5,523.30
6. Step 6: Final answer
   x = 7,773.57