Finding the Fourth Proportional to 31,866.56, 43,980 and 19,291.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,866.56 : 43,980 = 19,291.52 : x
2. Step 2: Convert to fraction form
   31,866.56/43,980 = 19,291.52/x
3. Step 3: Cross multiply
   31,866.56x = 43,980 × 19,291.52
4. Step 4: Simplify right side
   31,866.56x = 848,441,049.60
5. Step 5: Solve for x
   x = 848,441,049.60/31,866.56
6. Step 6: Final answer
   x = 26,624.81