Finding the Fourth Proportional to 5,618.34, 8,406.63 and 3,528.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,618.34 : 8,406.63 = 3,528.56 : x
2. Step 2: Convert to fraction form
   5,618.34/8,406.63 = 3,528.56/x
3. Step 3: Cross multiply
   5,618.34x = 8,406.63 × 3,528.56
4. Step 4: Simplify right side
   5,618.34x = 29,663,256.32
5. Step 5: Solve for x
   x = 29,663,256.32/5,618.34
6. Step 6: Final answer
   x = 5,279.72