Finding the Fourth Proportional to 7,280.46, 10,909.68 and 5,422.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,280.46 : 10,909.68 = 5,422.86 : x
2. Step 2: Convert to fraction form
   7,280.46/10,909.68 = 5,422.86/x
3. Step 3: Cross multiply
   7,280.46x = 10,909.68 × 5,422.86
4. Step 4: Simplify right side
   7,280.46x = 59,161,667.28
5. Step 5: Solve for x
   x = 59,161,667.28/7,280.46
6. Step 6: Final answer
   x = 8,126.09