Finding the Fourth Proportional to 18,933.72, 26,128.72 and 10,436.16

Step by Step Solution

1. Step 1: Write the proportion equation
   18,933.72 : 26,128.72 = 10,436.16 : x
2. Step 2: Convert to fraction form
   18,933.72/26,128.72 = 10,436.16/x
3. Step 3: Cross multiply
   18,933.72x = 26,128.72 × 10,436.16
4. Step 4: Simplify right side
   18,933.72x = 272,683,502.52
5. Step 5: Solve for x
   x = 272,683,502.52/18,933.72
6. Step 6: Final answer
   x = 14,402.00