Finding the Fourth Proportional to 9,961.50, 13,746.87 and 5,545.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,961.50 : 13,746.87 = 5,545.50 : x
2. Step 2: Convert to fraction form
   9,961.50/13,746.87 = 5,545.50/x
3. Step 3: Cross multiply
   9,961.50x = 13,746.87 × 5,545.50
4. Step 4: Simplify right side
   9,961.50x = 76,233,267.59
5. Step 5: Solve for x
   x = 76,233,267.59/9,961.50
6. Step 6: Final answer
   x = 7,652.79