Finding the Fourth Proportional to 9,894.33, 13,654.32 and 5,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,894.33 : 13,654.32 = 5,418.50 : x
2. Step 2: Convert to fraction form
   9,894.33/13,654.32 = 5,418.50/x
3. Step 3: Cross multiply
   9,894.33x = 13,654.32 × 5,418.50
4. Step 4: Simplify right side
   9,894.33x = 73,985,874.81
5. Step 5: Solve for x
   x = 73,985,874.81/9,894.33
6. Step 6: Final answer
   x = 7,477.61