Finding the Fourth Proportional to 5,784.04, 7,978.22 and 3,545.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,784.04 : 7,978.22 = 3,545.12 : x
2. Step 2: Convert to fraction form
   5,784.04/7,978.22 = 3,545.12/x
3. Step 3: Cross multiply
   5,784.04x = 7,978.22 × 3,545.12
4. Step 4: Simplify right side
   5,784.04x = 28,283,747.29
5. Step 5: Solve for x
   x = 28,283,747.29/5,784.04
6. Step 6: Final answer
   x = 4,889.96