Finding the Fourth Proportional to 10,143.54, 14,015.97 and 7,805.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,143.54 : 14,015.97 = 7,805.88 : x
2. Step 2: Convert to fraction form
   10,143.54/14,015.97 = 7,805.88/x
3. Step 3: Cross multiply
   10,143.54x = 14,015.97 × 7,805.88
4. Step 4: Simplify right side
   10,143.54x = 109,406,979.90
5. Step 5: Solve for x
   x = 109,406,979.90/10,143.54
6. Step 6: Final answer
   x = 10,785.88