Finding the Fourth Proportional to 22,519.12, 31,055.72 and 13,551.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,519.12 : 31,055.72 = 13,551.06 : x
2. Step 2: Convert to fraction form
   22,519.12/31,055.72 = 13,551.06/x
3. Step 3: Cross multiply
   22,519.12x = 31,055.72 × 13,551.06
4. Step 4: Simplify right side
   22,519.12x = 420,837,925.06
5. Step 5: Solve for x
   x = 420,837,925.06/22,519.12
6. Step 6: Final answer
   x = 18,688.03