Finding the Fourth Proportional to 13,250.85, 19,871.16 and 5,647.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,250.85 : 19,871.16 = 5,647.31 : x
2. Step 2: Convert to fraction form
   13,250.85/19,871.16 = 5,647.31/x
3. Step 3: Cross multiply
   13,250.85x = 19,871.16 × 5,647.31
4. Step 4: Simplify right side
   13,250.85x = 112,218,501.22
5. Step 5: Solve for x
   x = 112,218,501.22/13,250.85
6. Step 6: Final answer
   x = 8,468.78