Finding the Fourth Proportional to 9,368.52, 12,928.05 and 5,176.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,368.52 : 12,928.05 = 5,176.50 : x
2. Step 2: Convert to fraction form
   9,368.52/12,928.05 = 5,176.50/x
3. Step 3: Cross multiply
   9,368.52x = 12,928.05 × 5,176.50
4. Step 4: Simplify right side
   9,368.52x = 66,922,050.83
5. Step 5: Solve for x
   x = 66,922,050.83/9,368.52
6. Step 6: Final answer
   x = 7,143.29