Finding the Fourth Proportional to 7,783.22, 10,728.04 and 5,515.32

Step by Step Solution

1. Step 1: Write the proportion equation
   7,783.22 : 10,728.04 = 5,515.32 : x
2. Step 2: Convert to fraction form
   7,783.22/10,728.04 = 5,515.32/x
3. Step 3: Cross multiply
   7,783.22x = 10,728.04 × 5,515.32
4. Step 4: Simplify right side
   7,783.22x = 59,168,573.57
5. Step 5: Solve for x
   x = 59,168,573.57/7,783.22
6. Step 6: Final answer
   x = 7,602.07