Finding the Fourth Proportional to 10,078,573.91, 15,108,908.70 and 3,929,138.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078,573.91 : 15,108,908.70 = 3,929,138.15 : x
2. Step 2: Convert to fraction form
   10,078,573.91/15,108,908.70 = 3,929,138.15/x
3. Step 3: Cross multiply
   10,078,573.91x = 15,108,908.70 × 3,929,138.15
4. Step 4: Simplify right side
   10,078,573.91x = 59,364,989,578,036.90
5. Step 5: Solve for x
   x = 59,364,989,578,036.90/10,078,573.91
6. Step 6: Final answer
   x = 5,890,217.22