Finding the Fourth Proportional to 5,631.60, 7,763.37 and 3,947.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,631.60 : 7,763.37 = 3,947.93 : x
2. Step 2: Convert to fraction form
   5,631.60/7,763.37 = 3,947.93/x
3. Step 3: Cross multiply
   5,631.60x = 7,763.37 × 3,947.93
4. Step 4: Simplify right side
   5,631.60x = 30,649,241.32
5. Step 5: Solve for x
   x = 30,649,241.32/5,631.60
6. Step 6: Final answer
   x = 5,442.37