Finding the Fourth Proportional to 39,492.72, 54,499.83 and 21,587.73

Step by Step Solution

1. Step 1: Write the proportion equation
   39,492.72 : 54,499.83 = 21,587.73 : x
2. Step 2: Convert to fraction form
   39,492.72/54,499.83 = 21,587.73/x
3. Step 3: Cross multiply
   39,492.72x = 54,499.83 × 21,587.73
4. Step 4: Simplify right side
   39,492.72x = 1,176,527,615.09
5. Step 5: Solve for x
   x = 1,176,527,615.09/39,492.72
6. Step 6: Final answer
   x = 29,791.00