Finding the Fourth Proportional to 37,512.82, 51,780.72 and 21,603.61

Step by Step Solution

1. Step 1: Write the proportion equation
   37,512.82 : 51,780.72 = 21,603.61 : x
2. Step 2: Convert to fraction form
   37,512.82/51,780.72 = 21,603.61/x
3. Step 3: Cross multiply
   37,512.82x = 51,780.72 × 21,603.61
4. Step 4: Simplify right side
   37,512.82x = 1,118,650,504.62
5. Step 5: Solve for x
   x = 1,118,650,504.62/37,512.82
6. Step 6: Final answer
   x = 29,820.48