Finding the Fourth Proportional to 10,117.81, 15,174.51 and 3,876.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,117.81 : 15,174.51 = 3,876.40 : x
2. Step 2: Convert to fraction form
   10,117.81/15,174.51 = 3,876.40/x
3. Step 3: Cross multiply
   10,117.81x = 15,174.51 × 3,876.40
4. Step 4: Simplify right side
   10,117.81x = 58,822,470.56
5. Step 5: Solve for x
   x = 58,822,470.56/10,117.81
6. Step 6: Final answer
   x = 5,813.76