Finding the Fourth Proportional to 4,840.02, 7,247.72 and 3,191.57

Step by Step Solution

1. Step 1: Write the proportion equation
   4,840.02 : 7,247.72 = 3,191.57 : x
2. Step 2: Convert to fraction form
   4,840.02/7,247.72 = 3,191.57/x
3. Step 3: Cross multiply
   4,840.02x = 7,247.72 × 3,191.57
4. Step 4: Simplify right side
   4,840.02x = 23,131,553.52
5. Step 5: Solve for x
   x = 23,131,553.52/4,840.02
6. Step 6: Final answer
   x = 4,779.23