Finding the Fourth Proportional to 12,957.22, 19,438.71 and 3,722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,957.22 : 19,438.71 = 3,722.50 : x
2. Step 2: Convert to fraction form
   12,957.22/19,438.71 = 3,722.50/x
3. Step 3: Cross multiply
   12,957.22x = 19,438.71 × 3,722.50
4. Step 4: Simplify right side
   12,957.22x = 72,360,597.98
5. Step 5: Solve for x
   x = 72,360,597.98/12,957.22
6. Step 6: Final answer
   x = 5,584.58