Finding the Fourth Proportional to 9,611.08, 13,263.29 and 5,419.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,611.08 : 13,263.29 = 5,419.33 : x
2. Step 2: Convert to fraction form
   9,611.08/13,263.29 = 5,419.33/x
3. Step 3: Cross multiply
   9,611.08x = 13,263.29 × 5,419.33
4. Step 4: Simplify right side
   9,611.08x = 71,878,105.46
5. Step 5: Solve for x
   x = 71,878,105.46/9,611.08
6. Step 6: Final answer
   x = 7,478.67