Finding the Fourth Proportional to 3,430.05, 4,737.89 and 3,011.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,430.05 : 4,737.89 = 3,011.78 : x
2. Step 2: Convert to fraction form
   3,430.05/4,737.89 = 3,011.78/x
3. Step 3: Cross multiply
   3,430.05x = 4,737.89 × 3,011.78
4. Step 4: Simplify right side
   3,430.05x = 14,269,501.72
5. Step 5: Solve for x
   x = 14,269,501.72/3,430.05
6. Step 6: Final answer
   x = 4,160.15