Finding the Fourth Proportional to 22,443.02, 30,969.54 and 13,012.19

Step by Step Solution

1. Step 1: Write the proportion equation
   22,443.02 : 30,969.54 = 13,012.19 : x
2. Step 2: Convert to fraction form
   22,443.02/30,969.54 = 13,012.19/x
3. Step 3: Cross multiply
   22,443.02x = 30,969.54 × 13,012.19
4. Step 4: Simplify right side
   22,443.02x = 402,981,538.69
5. Step 5: Solve for x
   x = 402,981,538.69/22,443.02
6. Step 6: Final answer
   x = 17,955.76