Finding the Fourth Proportional to 3,929.02, 5,430.71 and 3,453.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,929.02 : 5,430.71 = 3,453.35 : x
2. Step 2: Convert to fraction form
   3,929.02/5,430.71 = 3,453.35/x
3. Step 3: Cross multiply
   3,929.02x = 5,430.71 × 3,453.35
4. Step 4: Simplify right side
   3,929.02x = 18,754,123.86
5. Step 5: Solve for x
   x = 18,754,123.86/3,929.02
6. Step 6: Final answer
   x = 4,773.24