Finding the Fourth Proportional to 9,963.32, 13,749.39 and 5,487.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,963.32 : 13,749.39 = 5,487.06 : x
2. Step 2: Convert to fraction form
   9,963.32/13,749.39 = 5,487.06/x
3. Step 3: Cross multiply
   9,963.32x = 13,749.39 × 5,487.06
4. Step 4: Simplify right side
   9,963.32x = 75,443,727.89
5. Step 5: Solve for x
   x = 75,443,727.89/9,963.32
6. Step 6: Final answer
   x = 7,572.15