Finding the Fourth Proportional to 9,963.91, 13,750.54 and 5,488.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,963.91 : 13,750.54 = 5,488.00 : x
2. Step 2: Convert to fraction form
   9,963.91/13,750.54 = 5,488.00/x
3. Step 3: Cross multiply
   9,963.91x = 13,750.54 × 5,488.00
4. Step 4: Simplify right side
   9,963.91x = 75,462,894.77
5. Step 5: Solve for x
   x = 75,462,894.77/9,963.91
6. Step 6: Final answer
   x = 7,573.63