Finding the Fourth Proportional to 10,778,942.72, 14,837,185.30 and 9,399,853.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,778,942.72 : 14,837,185.30 = 9,399,853.32 : x
2. Step 2: Convert to fraction form
   10,778,942.72/14,837,185.30 = 9,399,853.32/x
3. Step 3: Cross multiply
   10,778,942.72x = 14,837,185.30 × 9,399,853.32
4. Step 4: Simplify right side
   10,778,942.72x = 139,467,365,550,046.80
5. Step 5: Solve for x
   x = 139,467,365,550,046.80/10,778,942.72
6. Step 6: Final answer
   x = 12,938,872.50