Finding the Fourth Proportional to 22,864.28, 34,300.26 and 7,870.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,864.28 : 34,300.26 = 7,870.80 : x
2. Step 2: Convert to fraction form
   22,864.28/34,300.26 = 7,870.80/x
3. Step 3: Cross multiply
   22,864.28x = 34,300.26 × 7,870.80
4. Step 4: Simplify right side
   22,864.28x = 269,970,275.55
5. Step 5: Solve for x
   x = 269,970,275.55/22,864.28
6. Step 6: Final answer
   x = 11,807.52