Finding the Fourth Proportional to 9,961.46, 13,746.94 and 5,485.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,961.46 : 13,746.94 = 5,485.20 : x
2. Step 2: Convert to fraction form
   9,961.46/13,746.94 = 5,485.20/x
3. Step 3: Cross multiply
   9,961.46x = 13,746.94 × 5,485.20
4. Step 4: Simplify right side
   9,961.46x = 75,404,646.55
5. Step 5: Solve for x
   x = 75,404,646.55/9,961.46
6. Step 6: Final answer
   x = 7,569.64