Finding the Fourth Proportional to 9,520.17, 14,280.98 and 2,947.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,520.17 : 14,280.98 = 2,947.02 : x
2. Step 2: Convert to fraction form
   9,520.17/14,280.98 = 2,947.02/x
3. Step 3: Cross multiply
   9,520.17x = 14,280.98 × 2,947.02
4. Step 4: Simplify right side
   9,520.17x = 42,086,333.68
5. Step 5: Solve for x
   x = 42,086,333.68/9,520.17
6. Step 6: Final answer
   x = 4,420.75