Finding the Fourth Proportional to 31,459.56, 47,167.47 and 13,919.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,459.56 : 47,167.47 = 13,919.82 : x
2. Step 2: Convert to fraction form
   31,459.56/47,167.47 = 13,919.82/x
3. Step 3: Cross multiply
   31,459.56x = 47,167.47 × 13,919.82
4. Step 4: Simplify right side
   31,459.56x = 656,562,692.26
5. Step 5: Solve for x
   x = 656,562,692.26/31,459.56
6. Step 6: Final answer
   x = 20,870.05