Finding the Fourth Proportional to 21,968.42, 30,315.75 and 12,536.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,968.42 : 30,315.75 = 12,536.51 : x
2. Step 2: Convert to fraction form
   21,968.42/30,315.75 = 12,536.51/x
3. Step 3: Cross multiply
   21,968.42x = 30,315.75 × 12,536.51
4. Step 4: Simplify right side
   21,968.42x = 380,053,703.03
5. Step 5: Solve for x
   x = 380,053,703.03/21,968.42
6. Step 6: Final answer
   x = 17,300.00