Finding the Fourth Proportional to 3,855,128.96, 5,320,109.22 and 2,136,278.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855,128.96 : 5,320,109.22 = 2,136,278.18 : x
2. Step 2: Convert to fraction form
   3,855,128.96/5,320,109.22 = 2,136,278.18/x
3. Step 3: Cross multiply
   3,855,128.96x = 5,320,109.22 × 2,136,278.18
4. Step 4: Simplify right side
   3,855,128.96x = 11,365,233,241,902.82
5. Step 5: Solve for x
   x = 11,365,233,241,902.82/3,855,128.96
6. Step 6: Final answer
   x = 2,948,081.21