Finding the Fourth Proportional to 10,139.48, 15,200.41 and 4,871.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,139.48 : 15,200.41 = 4,871.85 : x
2. Step 2: Convert to fraction form
   10,139.48/15,200.41 = 4,871.85/x
3. Step 3: Cross multiply
   10,139.48x = 15,200.41 × 4,871.85
4. Step 4: Simplify right side
   10,139.48x = 74,054,017.10
5. Step 5: Solve for x
   x = 74,054,017.10/10,139.48
6. Step 6: Final answer
   x = 7,303.53