Finding the Fourth Proportional to 37,891.40, 52,290.50 and 20,896.25

Step by Step Solution

1. Step 1: Write the proportion equation
   37,891.40 : 52,290.50 = 20,896.25 : x
2. Step 2: Convert to fraction form
   37,891.40/52,290.50 = 20,896.25/x
3. Step 3: Cross multiply
   37,891.40x = 52,290.50 × 20,896.25
4. Step 4: Simplify right side
   37,891.40x = 1,092,674,994.69
5. Step 5: Solve for x
   x = 1,092,674,994.69/37,891.40
6. Step 6: Final answer
   x = 28,837.02