Finding the Fourth Proportional to 9,612.04, 13,263.54 and 5,419.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,612.04 : 13,263.54 = 5,419.48 : x
2. Step 2: Convert to fraction form
   9,612.04/13,263.54 = 5,419.48/x
3. Step 3: Cross multiply
   9,612.04x = 13,263.54 × 5,419.48
4. Step 4: Simplify right side
   9,612.04x = 71,881,489.76
5. Step 5: Solve for x
   x = 71,881,489.76/9,612.04
6. Step 6: Final answer
   x = 7,478.28