Finding the Fourth Proportional to 3,494.72, 5,245.20 and 3,123.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,494.72 : 5,245.20 = 3,123.93 : x
2. Step 2: Convert to fraction form
   3,494.72/5,245.20 = 3,123.93/x
3. Step 3: Cross multiply
   3,494.72x = 5,245.20 × 3,123.93
4. Step 4: Simplify right side
   3,494.72x = 16,385,637.64
5. Step 5: Solve for x
   x = 16,385,637.64/3,494.72
6. Step 6: Final answer
   x = 4,688.68