Finding the Fourth Proportional to 9,320,111.46, 12,855,128.43 and 6,221,072.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,320,111.46 : 12,855,128.43 = 6,221,072.31 : x
2. Step 2: Convert to fraction form
   9,320,111.46/12,855,128.43 = 6,221,072.31/x
3. Step 3: Cross multiply
   9,320,111.46x = 12,855,128.43 × 6,221,072.31
4. Step 4: Simplify right side
   9,320,111.46x = 79,972,683,517,366.77
5. Step 5: Solve for x
   x = 79,972,683,517,366.77/9,320,111.46
6. Step 6: Final answer
   x = 8,580,657.42