Finding the Fourth Proportional to 39,478.72, 59,229.96 and 14,530.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,478.72 : 59,229.96 = 14,530.72 : x
2. Step 2: Convert to fraction form
   39,478.72/59,229.96 = 14,530.72/x
3. Step 3: Cross multiply
   39,478.72x = 59,229.96 × 14,530.72
4. Step 4: Simplify right side
   39,478.72x = 860,653,964.37
5. Step 5: Solve for x
   x = 860,653,964.37/39,478.72
6. Step 6: Final answer
   x = 21,800.45