Finding the Fourth Proportional to 22,847.15, 31,535.78 and 13,289.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,847.15 : 31,535.78 = 13,289.29 : x
2. Step 2: Convert to fraction form
   22,847.15/31,535.78 = 13,289.29/x
3. Step 3: Cross multiply
   22,847.15x = 31,535.78 × 13,289.29
4. Step 4: Simplify right side
   22,847.15x = 419,087,980.51
5. Step 5: Solve for x
   x = 419,087,980.51/22,847.15
6. Step 6: Final answer
   x = 18,343.12