Finding the Fourth Proportional to 12,942,469.31, 17,860,981.48 and 7,141,624.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942,469.31 : 17,860,981.48 = 7,141,624.61 : x
2. Step 2: Convert to fraction form
   12,942,469.31/17,860,981.48 = 7,141,624.61/x
3. Step 3: Cross multiply
   12,942,469.31x = 17,860,981.48 × 7,141,624.61
4. Step 4: Simplify right side
   12,942,469.31x = 127,556,424,789,163.25
5. Step 5: Solve for x
   x = 127,556,424,789,163.25/12,942,469.31
6. Step 6: Final answer
   x = 9,855,648.24