Finding the Fourth Proportional to 39,487.72, 54,492.93 and 21,582.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,487.72 : 54,492.93 = 21,582.72 : x
2. Step 2: Convert to fraction form
   39,487.72/54,492.93 = 21,582.72/x
3. Step 3: Cross multiply
   39,487.72x = 54,492.93 × 21,582.72
4. Step 4: Simplify right side
   39,487.72x = 1,176,105,650.17
5. Step 5: Solve for x
   x = 1,176,105,650.17/39,487.72
6. Step 6: Final answer
   x = 29,784.09