Finding the Fourth Proportional to 9,697.78, 13,382.90 and 5,448.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,697.78 : 13,382.90 = 5,448.96 : x
2. Step 2: Convert to fraction form
   9,697.78/13,382.90 = 5,448.96/x
3. Step 3: Cross multiply
   9,697.78x = 13,382.90 × 5,448.96
4. Step 4: Simplify right side
   9,697.78x = 72,922,886.78
5. Step 5: Solve for x
   x = 72,922,886.78/9,697.78
6. Step 6: Final answer
   x = 7,519.55