Finding the Fourth Proportional to 8,742.94, 12,061.80 and 5,760.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,742.94 : 12,061.80 = 5,760.22 : x
2. Step 2: Convert to fraction form
   8,742.94/12,061.80 = 5,760.22/x
3. Step 3: Cross multiply
   8,742.94x = 12,061.80 × 5,760.22
4. Step 4: Simplify right side
   8,742.94x = 69,478,621.60
5. Step 5: Solve for x
   x = 69,478,621.60/8,742.94
6. Step 6: Final answer
   x = 7,946.83