Finding the Fourth Proportional to 10,086.63, 15,116.04 and 5,145.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,086.63 : 15,116.04 = 5,145.94 : x
2. Step 2: Convert to fraction form
   10,086.63/15,116.04 = 5,145.94/x
3. Step 3: Cross multiply
   10,086.63x = 15,116.04 × 5,145.94
4. Step 4: Simplify right side
   10,086.63x = 77,786,289.50
5. Step 5: Solve for x
   x = 77,786,289.50/10,086.63
6. Step 6: Final answer
   x = 7,711.82