Finding the Fourth Proportional to 9,921.48, 13,690.91 and 5,444.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,921.48 : 13,690.91 = 5,444.52 : x
2. Step 2: Convert to fraction form
   9,921.48/13,690.91 = 5,444.52/x
3. Step 3: Cross multiply
   9,921.48x = 13,690.91 × 5,444.52
4. Step 4: Simplify right side
   9,921.48x = 74,540,406.09
5. Step 5: Solve for x
   x = 74,540,406.09/9,921.48
6. Step 6: Final answer
   x = 7,513.03