Finding the Fourth Proportional to 12,942,470.31, 17,860,982.86 and 7,141,625.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942,470.31 : 17,860,982.86 = 7,141,625.61 : x
2. Step 2: Convert to fraction form
   12,942,470.31/17,860,982.86 = 7,141,625.61/x
3. Step 3: Cross multiply
   12,942,470.31x = 17,860,982.86 × 7,141,625.61
4. Step 4: Simplify right side
   12,942,470.31x = 127,556,452,612,747.05
5. Step 5: Solve for x
   x = 127,556,452,612,747.05/12,942,470.31
6. Step 6: Final answer
   x = 9,855,649.62