Finding the Fourth Proportional to 3,428.77, 5,113.05 and 3,397.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.77 : 5,113.05 = 3,397.59 : x
2. Step 2: Convert to fraction form
   3,428.77/5,113.05 = 3,397.59/x
3. Step 3: Cross multiply
   3,428.77x = 5,113.05 × 3,397.59
4. Step 4: Simplify right side
   3,428.77x = 17,372,047.55
5. Step 5: Solve for x
   x = 17,372,047.55/3,428.77
6. Step 6: Final answer
   x = 5,066.55