Finding the Fourth Proportional to 39,953.37, 59,919.69 and 11,865.89

Step by Step Solution

1. Step 1: Write the proportion equation
   39,953.37 : 59,919.69 = 11,865.89 : x
2. Step 2: Convert to fraction form
   39,953.37/59,919.69 = 11,865.89/x
3. Step 3: Cross multiply
   39,953.37x = 59,919.69 × 11,865.89
4. Step 4: Simplify right side
   39,953.37x = 711,000,150.78
5. Step 5: Solve for x
   x = 711,000,150.78/39,953.37
6. Step 6: Final answer
   x = 17,795.75