Finding the Fourth Proportional to 9,116.48, 13,665.12 and 4,729.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,116.48 : 13,665.12 = 4,729.28 : x
2. Step 2: Convert to fraction form
   9,116.48/13,665.12 = 4,729.28/x
3. Step 3: Cross multiply
   9,116.48x = 13,665.12 × 4,729.28
4. Step 4: Simplify right side
   9,116.48x = 64,626,178.71
5. Step 5: Solve for x
   x = 64,626,178.71/9,116.48
6. Step 6: Final answer
   x = 7,088.94