Finding the Fourth Proportional to 9,869.42, 13,619.83 and 5,393.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,869.42 : 13,619.83 = 5,393.17 : x
2. Step 2: Convert to fraction form
   9,869.42/13,619.83 = 5,393.17/x
3. Step 3: Cross multiply
   9,869.42x = 13,619.83 × 5,393.17
4. Step 4: Simplify right side
   9,869.42x = 73,454,066.90
5. Step 5: Solve for x
   x = 73,454,066.90/9,869.42
6. Step 6: Final answer
   x = 7,442.59