Finding the Fourth Proportional to 9,858.42, 13,604.54 and 5,382.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,858.42 : 13,604.54 = 5,382.17 : x
2. Step 2: Convert to fraction form
   9,858.42/13,604.54 = 5,382.17/x
3. Step 3: Cross multiply
   9,858.42x = 13,604.54 × 5,382.17
4. Step 4: Simplify right side
   9,858.42x = 73,221,892.48
5. Step 5: Solve for x
   x = 73,221,892.48/9,858.42
6. Step 6: Final answer
   x = 7,427.35