Finding the Fourth Proportional to 39,517.74, 59,284.72 and 13,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,517.74 : 59,284.72 = 13,222.72 : x
2. Step 2: Convert to fraction form
   39,517.74/59,284.72 = 13,222.72/x
3. Step 3: Cross multiply
   39,517.74x = 59,284.72 × 13,222.72
4. Step 4: Simplify right side
   39,517.74x = 783,905,252.84
5. Step 5: Solve for x
   x = 783,905,252.84/39,517.74
6. Step 6: Final answer
   x = 19,836.79