Finding the Fourth Proportional to 9,766.30, 13,478.32 and 5,518.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,766.30 : 13,478.32 = 5,518.13 : x
2. Step 2: Convert to fraction form
   9,766.30/13,478.32 = 5,518.13/x
3. Step 3: Cross multiply
   9,766.30x = 13,478.32 × 5,518.13
4. Step 4: Simplify right side
   9,766.30x = 74,375,141.84
5. Step 5: Solve for x
   x = 74,375,141.84/9,766.30
6. Step 6: Final answer
   x = 7,615.49