Finding the Fourth Proportional to 9,893.79, 13,653.42 and 5,417.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,893.79 : 13,653.42 = 5,417.54 : x
2. Step 2: Convert to fraction form
   9,893.79/13,653.42 = 5,417.54/x
3. Step 3: Cross multiply
   9,893.79x = 13,653.42 × 5,417.54
4. Step 4: Simplify right side
   9,893.79x = 73,967,880.72
5. Step 5: Solve for x
   x = 73,967,880.72/9,893.79
6. Step 6: Final answer
   x = 7,476.20