Finding the Fourth Proportional to 40,404.60, 60,601.14 and 12,699

Step by Step Solution

1. Step 1: Write the proportion equation
   40,404.60 : 60,601.14 = 12,699 : x
2. Step 2: Convert to fraction form
   40,404.60/60,601.14 = 12,699/x
3. Step 3: Cross multiply
   40,404.60x = 60,601.14 × 12,699
4. Step 4: Simplify right side
   40,404.60x = 769,573,876.86
5. Step 5: Solve for x
   x = 769,573,876.86/40,404.60
6. Step 6: Final answer
   x = 19,046.69