Finding the Fourth Proportional to 12,408.80, 18,602.73 and 5,383.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,408.80 : 18,602.73 = 5,383.52 : x
2. Step 2: Convert to fraction form
   12,408.80/18,602.73 = 5,383.52/x
3. Step 3: Cross multiply
   12,408.80x = 18,602.73 × 5,383.52
4. Step 4: Simplify right side
   12,408.80x = 100,148,095.59
5. Step 5: Solve for x
   x = 100,148,095.59/12,408.80
6. Step 6: Final answer
   x = 8,070.73