Finding the Fourth Proportional to 9,896.03, 13,656.50 and 5,419.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,896.03 : 13,656.50 = 5,419.79 : x
2. Step 2: Convert to fraction form
   9,896.03/13,656.50 = 5,419.79/x
3. Step 3: Cross multiply
   9,896.03x = 13,656.50 × 5,419.79
4. Step 4: Simplify right side
   9,896.03x = 74,015,307.40
5. Step 5: Solve for x
   x = 74,015,307.40/9,896.03
6. Step 6: Final answer
   x = 7,479.29