Finding the Fourth Proportional to 7,139.02, 10,700.32 and 4,796.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139.02 : 10,700.32 = 4,796.20 : x
2. Step 2: Convert to fraction form
   7,139.02/10,700.32 = 4,796.20/x
3. Step 3: Cross multiply
   7,139.02x = 10,700.32 × 4,796.20
4. Step 4: Simplify right side
   7,139.02x = 51,320,874.78
5. Step 5: Solve for x
   x = 51,320,874.78/7,139.02
6. Step 6: Final answer
   x = 7,188.78