Finding the Fourth Proportional to 9,895.55, 13,655.81 and 5,419.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,895.55 : 13,655.81 = 5,419.58 : x
2. Step 2: Convert to fraction form
   9,895.55/13,655.81 = 5,419.58/x
3. Step 3: Cross multiply
   9,895.55x = 13,655.81 × 5,419.58
4. Step 4: Simplify right side
   9,895.55x = 74,008,659.38
5. Step 5: Solve for x
   x = 74,008,659.38/9,895.55
6. Step 6: Final answer
   x = 7,478.99