Finding the Fourth Proportional to 9,963.60, 13,749.77 and 5,487.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,963.60 : 13,749.77 = 5,487.34 : x
2. Step 2: Convert to fraction form
   9,963.60/13,749.77 = 5,487.34/x
3. Step 3: Cross multiply
   9,963.60x = 13,749.77 × 5,487.34
4. Step 4: Simplify right side
   9,963.60x = 75,449,662.91
5. Step 5: Solve for x
   x = 75,449,662.91/9,963.60
6. Step 6: Final answer
   x = 7,572.53