Finding the Fourth Proportional to 37,456.80, 51,678.72 and 21,535.52

Step by Step Solution

1. Step 1: Write the proportion equation
   37,456.80 : 51,678.72 = 21,535.52 : x
2. Step 2: Convert to fraction form
   37,456.80/51,678.72 = 21,535.52/x
3. Step 3: Cross multiply
   37,456.80x = 51,678.72 × 21,535.52
4. Step 4: Simplify right side
   37,456.80x = 1,112,928,108.13
5. Step 5: Solve for x
   x = 1,112,928,108.13/37,456.80
6. Step 6: Final answer
   x = 29,712.31