Finding the Fourth Proportional to 11,992,528.72, 17,990,053.76 and 3,906,134.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,992,528.72 : 17,990,053.76 = 3,906,134.48 : x
2. Step 2: Convert to fraction form
   11,992,528.72/17,990,053.76 = 3,906,134.48/x
3. Step 3: Cross multiply
   11,992,528.72x = 17,990,053.76 × 3,906,134.48
4. Step 4: Simplify right side
   11,992,528.72x = 70,271,569,288,989.65
5. Step 5: Solve for x
   x = 70,271,569,288,989.65/11,992,528.72
6. Step 6: Final answer
   x = 5,859,612.34