Finding the Fourth Proportional to 7,288.72, 10,055.72 and 4,142.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,288.72 : 10,055.72 = 4,142.48 : x
2. Step 2: Convert to fraction form
   7,288.72/10,055.72 = 4,142.48/x
3. Step 3: Cross multiply
   7,288.72x = 10,055.72 × 4,142.48
4. Step 4: Simplify right side
   7,288.72x = 41,655,618.99
5. Step 5: Solve for x
   x = 41,655,618.99/7,288.72
6. Step 6: Final answer
   x = 5,715.08