Finding the Fourth Proportional to 9,894.32, 13,654.12 and 5,418.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,894.32 : 13,654.12 = 5,418.06 : x
2. Step 2: Convert to fraction form
   9,894.32/13,654.12 = 5,418.06/x
3. Step 3: Cross multiply
   9,894.32x = 13,654.12 × 5,418.06
4. Step 4: Simplify right side
   9,894.32x = 73,978,841.41
5. Step 5: Solve for x
   x = 73,978,841.41/9,894.32
6. Step 6: Final answer
   x = 7,476.90