Finding the Fourth Proportional to 28,196.40, 42,297.48 and 9,726

Step by Step Solution

1. Step 1: Write the proportion equation
   28,196.40 : 42,297.48 = 9,726 : x
2. Step 2: Convert to fraction form
   28,196.40/42,297.48 = 9,726/x
3. Step 3: Cross multiply
   28,196.40x = 42,297.48 × 9,726
4. Step 4: Simplify right side
   28,196.40x = 411,385,290.48
5. Step 5: Solve for x
   x = 411,385,290.48/28,196.40
6. Step 6: Final answer
   x = 14,589.99