Finding the Fourth Proportional to 9,370.58, 12,931.88 and 5,392.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,370.58 : 12,931.88 = 5,392.28 : x
2. Step 2: Convert to fraction form
   9,370.58/12,931.88 = 5,392.28/x
3. Step 3: Cross multiply
   9,370.58x = 12,931.88 × 5,392.28
4. Step 4: Simplify right side
   9,370.58x = 69,732,323.25
5. Step 5: Solve for x
   x = 69,732,323.25/9,370.58
6. Step 6: Final answer
   x = 7,441.63