Finding the Fourth Proportional to 39,819.72, 59,738.22 and 12,117

Step by Step Solution

1. Step 1: Write the proportion equation
   39,819.72 : 59,738.22 = 12,117 : x
2. Step 2: Convert to fraction form
   39,819.72/59,738.22 = 12,117/x
3. Step 3: Cross multiply
   39,819.72x = 59,738.22 × 12,117
4. Step 4: Simplify right side
   39,819.72x = 723,848,011.74
5. Step 5: Solve for x
   x = 723,848,011.74/39,819.72
6. Step 6: Final answer
   x = 18,178.13