Finding the Fourth Proportional to 5,328.72, 7,973.03 and 3,688.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,328.72 : 7,973.03 = 3,688.47 : x
2. Step 2: Convert to fraction form
   5,328.72/7,973.03 = 3,688.47/x
3. Step 3: Cross multiply
   5,328.72x = 7,973.03 × 3,688.47
4. Step 4: Simplify right side
   5,328.72x = 29,408,291.19
5. Step 5: Solve for x
   x = 29,408,291.19/5,328.72
6. Step 6: Final answer
   x = 5,518.83