Finding the Fourth Proportional to 9,895.86, 13,656.21 and 5,419.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,895.86 : 13,656.21 = 5,419.53 : x
2. Step 2: Convert to fraction form
   9,895.86/13,656.21 = 5,419.53/x
3. Step 3: Cross multiply
   9,895.86x = 13,656.21 × 5,419.53
4. Step 4: Simplify right side
   9,895.86x = 74,010,239.78
5. Step 5: Solve for x
   x = 74,010,239.78/9,895.86
6. Step 6: Final answer
   x = 7,478.91