Finding the Fourth Proportional to 22,468.68, 31,009.54 and 13,520.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,468.68 : 31,009.54 = 13,520.84 : x
2. Step 2: Convert to fraction form
   22,468.68/31,009.54 = 13,520.84/x
3. Step 3: Cross multiply
   22,468.68x = 31,009.54 × 13,520.84
4. Step 4: Simplify right side
   22,468.68x = 419,275,028.81
5. Step 5: Solve for x
   x = 419,275,028.81/22,468.68
6. Step 6: Final answer
   x = 18,660.42