Finding the Fourth Proportional to 10,128.76, 15,193.18 and 3,887.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,128.76 : 15,193.18 = 3,887.32 : x
2. Step 2: Convert to fraction form
   10,128.76/15,193.18 = 3,887.32/x
3. Step 3: Cross multiply
   10,128.76x = 15,193.18 × 3,887.32
4. Step 4: Simplify right side
   10,128.76x = 59,060,752.48
5. Step 5: Solve for x
   x = 59,060,752.48/10,128.76
6. Step 6: Final answer
   x = 5,831.00