Finding the Fourth Proportional to 22,009.56, 30,372.61 and 13,392.51

Step by Step Solution

1. Step 1: Write the proportion equation
   22,009.56 : 30,372.61 = 13,392.51 : x
2. Step 2: Convert to fraction form
   22,009.56/30,372.61 = 13,392.51/x
3. Step 3: Cross multiply
   22,009.56x = 30,372.61 × 13,392.51
4. Step 4: Simplify right side
   22,009.56x = 406,765,483.15
5. Step 5: Solve for x
   x = 406,765,483.15/22,009.56
6. Step 6: Final answer
   x = 18,481.31