Finding the Fourth Proportional to 9,303.72, 12,839.52 and 5,112

Step by Step Solution

1. Step 1: Write the proportion equation
   9,303.72 : 12,839.52 = 5,112 : x
2. Step 2: Convert to fraction form
   9,303.72/12,839.52 = 5,112/x
3. Step 3: Cross multiply
   9,303.72x = 12,839.52 × 5,112
4. Step 4: Simplify right side
   9,303.72x = 65,635,626.24
5. Step 5: Solve for x
   x = 65,635,626.24/9,303.72
6. Step 6: Final answer
   x = 7,054.77