Finding the Fourth Proportional to 16,129.51, 22,256.30 and 9,054.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,129.51 : 22,256.30 = 9,054.56 : x
2. Step 2: Convert to fraction form
   16,129.51/22,256.30 = 9,054.56/x
3. Step 3: Cross multiply
   16,129.51x = 22,256.30 × 9,054.56
4. Step 4: Simplify right side
   16,129.51x = 201,521,082.01
5. Step 5: Solve for x
   x = 201,521,082.01/16,129.51
6. Step 6: Final answer
   x = 12,493.94