Finding the Fourth Proportional to 39,932.79, 59,892.83 and 13,276.57

Step by Step Solution

1. Step 1: Write the proportion equation
   39,932.79 : 59,892.83 = 13,276.57 : x
2. Step 2: Convert to fraction form
   39,932.79/59,892.83 = 13,276.57/x
3. Step 3: Cross multiply
   39,932.79x = 59,892.83 × 13,276.57
4. Step 4: Simplify right side
   39,932.79x = 795,171,233.45
5. Step 5: Solve for x
   x = 795,171,233.45/39,932.79
6. Step 6: Final answer
   x = 19,912.74