Finding the Fourth Proportional to 31,125, 42,952.50 and 19,947

Step by Step Solution

1. Step 1: Write the proportion equation
   31,125 : 42,952.50 = 19,947 : x
2. Step 2: Convert to fraction form
   31,125/42,952.50 = 19,947/x
3. Step 3: Cross multiply
   31,125x = 42,952.50 × 19,947
4. Step 4: Simplify right side
   31,125x = 856,773,517.50
5. Step 5: Solve for x
   x = 856,773,517.50/31,125
6. Step 6: Final answer
   x = 27,526.86