Finding the Fourth Proportional to 9,611.02, 13,263.20 and 5,419.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,611.02 : 13,263.20 = 5,419.27 : x
2. Step 2: Convert to fraction form
   9,611.02/13,263.20 = 5,419.27/x
3. Step 3: Cross multiply
   9,611.02x = 13,263.20 × 5,419.27
4. Step 4: Simplify right side
   9,611.02x = 71,876,809.10
5. Step 5: Solve for x
   x = 71,876,809.10/9,611.02
6. Step 6: Final answer
   x = 7,478.59