Finding the Fourth Proportional to 21,969, 30,317.22 and 12,537.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,969 : 30,317.22 = 12,537.36 : x
2. Step 2: Convert to fraction form
   21,969/30,317.22 = 12,537.36/x
3. Step 3: Cross multiply
   21,969x = 30,317.22 × 12,537.36
4. Step 4: Simplify right side
   21,969x = 380,097,901.34
5. Step 5: Solve for x
   x = 380,097,901.34/21,969
6. Step 6: Final answer
   x = 17,301.56