Finding the Fourth Proportional to 39,878.72, 59,828.46 and 14,920.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,878.72 : 59,828.46 = 14,920.72 : x
2. Step 2: Convert to fraction form
   39,878.72/59,828.46 = 14,920.72/x
3. Step 3: Cross multiply
   39,878.72x = 59,828.46 × 14,920.72
4. Step 4: Simplify right side
   39,878.72x = 892,683,494.17
5. Step 5: Solve for x
   x = 892,683,494.17/39,878.72
6. Step 6: Final answer
   x = 22,384.96