Finding the Fourth Proportional to 9,065.43, 12,510.28 and 5,086.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,065.43 : 12,510.28 = 5,086.91 : x
2. Step 2: Convert to fraction form
   9,065.43/12,510.28 = 5,086.91/x
3. Step 3: Cross multiply
   9,065.43x = 12,510.28 × 5,086.91
4. Step 4: Simplify right side
   9,065.43x = 63,638,706.07
5. Step 5: Solve for x
   x = 63,638,706.07/9,065.43
6. Step 6: Final answer
   x = 7,019.93