Finding the Fourth Proportional to 9,810.72, 13,543.61 and 6,683.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.72 : 13,543.61 = 6,683.31 : x
2. Step 2: Convert to fraction form
   9,810.72/13,543.61 = 6,683.31/x
3. Step 3: Cross multiply
   9,810.72x = 13,543.61 × 6,683.31
4. Step 4: Simplify right side
   9,810.72x = 90,516,110.73
5. Step 5: Solve for x
   x = 90,516,110.73/9,810.72
6. Step 6: Final answer
   x = 9,226.25