Finding the Fourth Proportional to 8,928.36, 12,312.59 and 5,342.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,928.36 : 12,312.59 = 5,342.71 : x
2. Step 2: Convert to fraction form
   8,928.36/12,312.59 = 5,342.71/x
3. Step 3: Cross multiply
   8,928.36x = 12,312.59 × 5,342.71
4. Step 4: Simplify right side
   8,928.36x = 65,782,536.16
5. Step 5: Solve for x
   x = 65,782,536.16/8,928.36
6. Step 6: Final answer
   x = 7,367.82