Finding the Fourth Proportional to 12,884.31, 19,326.55 and 3,524.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,884.31 : 19,326.55 = 3,524.12 : x
2. Step 2: Convert to fraction form
   12,884.31/19,326.55 = 3,524.12/x
3. Step 3: Cross multiply
   12,884.31x = 19,326.55 × 3,524.12
4. Step 4: Simplify right side
   12,884.31x = 68,109,081.39
5. Step 5: Solve for x
   x = 68,109,081.39/12,884.31
6. Step 6: Final answer
   x = 5,286.20