Finding the Fourth Proportional to 8,345.58, 12,521.82 and 3,663.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,345.58 : 12,521.82 = 3,663.18 : x
2. Step 2: Convert to fraction form
   8,345.58/12,521.82 = 3,663.18/x
3. Step 3: Cross multiply
   8,345.58x = 12,521.82 × 3,663.18
4. Step 4: Simplify right side
   8,345.58x = 45,869,680.59
5. Step 5: Solve for x
   x = 45,869,680.59/8,345.58
6. Step 6: Final answer
   x = 5,496.28