Finding the Fourth Proportional to 20,436.58, 30,657.27 and 7,290.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,436.58 : 30,657.27 = 7,290.82 : x
2. Step 2: Convert to fraction form
   20,436.58/30,657.27 = 7,290.82/x
3. Step 3: Cross multiply
   20,436.58x = 30,657.27 × 7,290.82
4. Step 4: Simplify right side
   20,436.58x = 223,516,637.26
5. Step 5: Solve for x
   x = 223,516,637.26/20,436.58
6. Step 6: Final answer
   x = 10,937.09