Finding the Fourth Proportional to 7,261.20, 10,019.88 and 4,116.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,261.20 : 10,019.88 = 4,116.78 : x
2. Step 2: Convert to fraction form
   7,261.20/10,019.88 = 4,116.78/x
3. Step 3: Cross multiply
   7,261.20x = 10,019.88 × 4,116.78
4. Step 4: Simplify right side
   7,261.20x = 41,249,641.59
5. Step 5: Solve for x
   x = 41,249,641.59/7,261.20
6. Step 6: Final answer
   x = 5,680.83