Finding the Fourth Proportional to 22,428.81, 30,943.98 and 13,806.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,428.81 : 30,943.98 = 13,806.12 : x
2. Step 2: Convert to fraction form
   22,428.81/30,943.98 = 13,806.12/x
3. Step 3: Cross multiply
   22,428.81x = 30,943.98 × 13,806.12
4. Step 4: Simplify right side
   22,428.81x = 427,216,301.16
5. Step 5: Solve for x
   x = 427,216,301.16/22,428.81
6. Step 6: Final answer
   x = 19,047.66