Finding the Fourth Proportional to 7,355.75, 10,142.48 and 5,584.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,355.75 : 10,142.48 = 5,584.28 : x
2. Step 2: Convert to fraction form
   7,355.75/10,142.48 = 5,584.28/x
3. Step 3: Cross multiply
   7,355.75x = 10,142.48 × 5,584.28
4. Step 4: Simplify right side
   7,355.75x = 56,638,411.46
5. Step 5: Solve for x
   x = 56,638,411.46/7,355.75
6. Step 6: Final answer
   x = 7,699.89