Finding the Fourth Proportional to 21,966.34, 30,315.72 and 12,536.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,966.34 : 30,315.72 = 12,536.32 : x
2. Step 2: Convert to fraction form
   21,966.34/30,315.72 = 12,536.32/x
3. Step 3: Cross multiply
   21,966.34x = 30,315.72 × 12,536.32
4. Step 4: Simplify right side
   21,966.34x = 380,047,566.95
5. Step 5: Solve for x
   x = 380,047,566.95/21,966.34
6. Step 6: Final answer
   x = 17,301.36