Finding the Fourth Proportional to 4,887.36, 7,320.24 and 3,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,887.36 : 7,320.24 = 3,150.72 : x
2. Step 2: Convert to fraction form
   4,887.36/7,320.24 = 3,150.72/x
3. Step 3: Cross multiply
   4,887.36x = 7,320.24 × 3,150.72
4. Step 4: Simplify right side
   4,887.36x = 23,064,026.57
5. Step 5: Solve for x
   x = 23,064,026.57/4,887.36
6. Step 6: Final answer
   x = 4,719.12