Finding the Fourth Proportional to 8,478.84, 12,713.82 and 3,547.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,478.84 : 12,713.82 = 3,547.56 : x
2. Step 2: Convert to fraction form
   8,478.84/12,713.82 = 3,547.56/x
3. Step 3: Cross multiply
   8,478.84x = 12,713.82 × 3,547.56
4. Step 4: Simplify right side
   8,478.84x = 45,103,039.28
5. Step 5: Solve for x
   x = 45,103,039.28/8,478.84
6. Step 6: Final answer
   x = 5,319.48