Finding the Fourth Proportional to 12,488.09, 18,734.42 and 3,722.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.09 : 18,734.42 = 3,722.00 : x
2. Step 2: Convert to fraction form
   12,488.09/18,734.42 = 3,722.00/x
3. Step 3: Cross multiply
   12,488.09x = 18,734.42 × 3,722.00
4. Step 4: Simplify right side
   12,488.09x = 69,729,426.87
5. Step 5: Solve for x
   x = 69,729,426.87/12,488.09
6. Step 6: Final answer
   x = 5,583.68