Finding the Fourth Proportional to 10,085.50, 15,130.38 and 4,238.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.50 : 15,130.38 = 4,238.74 : x
2. Step 2: Convert to fraction form
   10,085.50/15,130.38 = 4,238.74/x
3. Step 3: Cross multiply
   10,085.50x = 15,130.38 × 4,238.74
4. Step 4: Simplify right side
   10,085.50x = 64,133,746.92
5. Step 5: Solve for x
   x = 64,133,746.92/10,085.50
6. Step 6: Final answer
   x = 6,359.01