Finding the Fourth Proportional to 37,128.72, 55,687.60 and 10,826.40

Step by Step Solution

1. Step 1: Write the proportion equation
   37,128.72 : 55,687.60 = 10,826.40 : x
2. Step 2: Convert to fraction form
   37,128.72/55,687.60 = 10,826.40/x
3. Step 3: Cross multiply
   37,128.72x = 55,687.60 × 10,826.40
4. Step 4: Simplify right side
   37,128.72x = 602,896,232.64
5. Step 5: Solve for x
   x = 602,896,232.64/37,128.72
6. Step 6: Final answer
   x = 16,238.00