Finding the Fourth Proportional to 10,105.19, 15,151.71 and 3,865.66

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.19 : 15,151.71 = 3,865.66 : x
2. Step 2: Convert to fraction form
   10,105.19/15,151.71 = 3,865.66/x
3. Step 3: Cross multiply
   10,105.19x = 15,151.71 × 3,865.66
4. Step 4: Simplify right side
   10,105.19x = 58,571,264.19
5. Step 5: Solve for x
   x = 58,571,264.19/10,105.19
6. Step 6: Final answer
   x = 5,796.16