Finding the Fourth Proportional to 9,422.50, 13,003.20 and 5,173.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,422.50 : 13,003.20 = 5,173.96 : x
2. Step 2: Convert to fraction form
   9,422.50/13,003.20 = 5,173.96/x
3. Step 3: Cross multiply
   9,422.50x = 13,003.20 × 5,173.96
4. Step 4: Simplify right side
   9,422.50x = 67,278,036.67
5. Step 5: Solve for x
   x = 67,278,036.67/9,422.50
6. Step 6: Final answer
   x = 7,140.15