Finding the Fourth Proportional to 36,924.72, 55,385.64 and 12,300.72

Step by Step Solution

1. Step 1: Write the proportion equation
   36,924.72 : 55,385.64 = 12,300.72 : x
2. Step 2: Convert to fraction form
   36,924.72/55,385.64 = 12,300.72/x
3. Step 3: Cross multiply
   36,924.72x = 55,385.64 × 12,300.72
4. Step 4: Simplify right side
   36,924.72x = 681,283,249.66
5. Step 5: Solve for x
   x = 681,283,249.66/36,924.72
6. Step 6: Final answer
   x = 18,450.60