Finding the Fourth Proportional to 22,703.82, 31,328.55 and 12,629.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,703.82 : 31,328.55 = 12,629.72 : x
2. Step 2: Convert to fraction form
   22,703.82/31,328.55 = 12,629.72/x
3. Step 3: Cross multiply
   22,703.82x = 31,328.55 × 12,629.72
4. Step 4: Simplify right side
   22,703.82x = 395,670,814.51
5. Step 5: Solve for x
   x = 395,670,814.51/22,703.82
6. Step 6: Final answer
   x = 17,427.50