Finding the Fourth Proportional to 12,938.28, 19,405.98 and 3,704.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938.28 : 19,405.98 = 3,704.04 : x
2. Step 2: Convert to fraction form
   12,938.28/19,405.98 = 3,704.04/x
3. Step 3: Cross multiply
   12,938.28x = 19,405.98 × 3,704.04
4. Step 4: Simplify right side
   12,938.28x = 71,880,526.16
5. Step 5: Solve for x
   x = 71,880,526.16/12,938.28
6. Step 6: Final answer
   x = 5,555.65