Finding the Fourth Proportional to 7,321.40, 10,103.48 and 4,134.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,321.40 : 10,103.48 = 4,134.72 : x
2. Step 2: Convert to fraction form
   7,321.40/10,103.48 = 4,134.72/x
3. Step 3: Cross multiply
   7,321.40x = 10,103.48 × 4,134.72
4. Step 4: Simplify right side
   7,321.40x = 41,775,060.83
5. Step 5: Solve for x
   x = 41,775,060.83/7,321.40
6. Step 6: Final answer
   x = 5,705.88