Finding the Fourth Proportional to 31,611.53, 43,632.60 and 19,667.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,611.53 : 43,632.60 = 19,667.74 : x
2. Step 2: Convert to fraction form
   31,611.53/43,632.60 = 19,667.74/x
3. Step 3: Cross multiply
   31,611.53x = 43,632.60 × 19,667.74
4. Step 4: Simplify right side
   31,611.53x = 858,154,632.32
5. Step 5: Solve for x
   x = 858,154,632.32/31,611.53
6. Step 6: Final answer
   x = 27,146.89