Finding the Fourth Proportional to 12,978,367.48, 17,904,737.52 and 7,470,424.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,978,367.48 : 17,904,737.52 = 7,470,424.36 : x
2. Step 2: Convert to fraction form
   12,978,367.48/17,904,737.52 = 7,470,424.36/x
3. Step 3: Cross multiply
   12,978,367.48x = 17,904,737.52 × 7,470,424.36
4. Step 4: Simplify right side
   12,978,367.48x = 133,755,987,328,813.98
5. Step 5: Solve for x
   x = 133,755,987,328,813.98/12,978,367.48
6. Step 6: Final answer
   x = 10,306,071.82