Finding the Fourth Proportional to 11,510.94, 15,863.39 and 10,085.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,510.94 : 15,863.39 = 10,085.34 : x
2. Step 2: Convert to fraction form
   11,510.94/15,863.39 = 10,085.34/x
3. Step 3: Cross multiply
   11,510.94x = 15,863.39 × 10,085.34
4. Step 4: Simplify right side
   11,510.94x = 159,987,785.31
5. Step 5: Solve for x
   x = 159,987,785.31/11,510.94
6. Step 6: Final answer
   x = 13,898.75