Finding the Fourth Proportional to 11,992,522.72, 17,990,044.74 and 3,906,128.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,992,522.72 : 17,990,044.74 = 3,906,128.49 : x
2. Step 2: Convert to fraction form
   11,992,522.72/17,990,044.74 = 3,906,128.49/x
3. Step 3: Cross multiply
   11,992,522.72x = 17,990,044.74 × 3,906,128.49
4. Step 4: Simplify right side
   11,992,522.72x = 70,271,426,295,288.64
5. Step 5: Solve for x
   x = 70,271,426,295,288.64/11,992,522.72
6. Step 6: Final answer
   x = 5,859,603.35