Finding the Fourth Proportional to 9,961.33, 13,746.53 and 5,485

Step by Step Solution

1. Step 1: Write the proportion equation
   9,961.33 : 13,746.53 = 5,485 : x
2. Step 2: Convert to fraction form
   9,961.33/13,746.53 = 5,485/x
3. Step 3: Cross multiply
   9,961.33x = 13,746.53 × 5,485
4. Step 4: Simplify right side
   9,961.33x = 75,399,717.05
5. Step 5: Solve for x
   x = 75,399,717.05/9,961.33
6. Step 6: Final answer
   x = 7,569.24