Finding the Fourth Proportional to 9,895.79, 13,656.13 and 5,419.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,895.79 : 13,656.13 = 5,419.46 : x
2. Step 2: Convert to fraction form
   9,895.79/13,656.13 = 5,419.46/x
3. Step 3: Cross multiply
   9,895.79x = 13,656.13 × 5,419.46
4. Step 4: Simplify right side
   9,895.79x = 74,008,850.29
5. Step 5: Solve for x
   x = 74,008,850.29/9,895.79
6. Step 6: Final answer
   x = 7,478.82