Finding the Fourth Proportional to 8,317.56, 12,475.98 and 3,387

Step by Step Solution

1. Step 1: Write the proportion equation
   8,317.56 : 12,475.98 = 3,387 : x
2. Step 2: Convert to fraction form
   8,317.56/12,475.98 = 3,387/x
3. Step 3: Cross multiply
   8,317.56x = 12,475.98 × 3,387
4. Step 4: Simplify right side
   8,317.56x = 42,256,144.26
5. Step 5: Solve for x
   x = 42,256,144.26/8,317.56
6. Step 6: Final answer
   x = 5,080.35