Finding the Fourth Proportional to 21,445,828.82, 29,595,105.66 and 12,280,243.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,445,828.82 : 29,595,105.66 = 12,280,243.04 : x
2. Step 2: Convert to fraction form
   21,445,828.82/29,595,105.66 = 12,280,243.04/x
3. Step 3: Cross multiply
   21,445,828.82x = 29,595,105.66 × 12,280,243.04
4. Step 4: Simplify right side
   21,445,828.82x = 363,435,090,299,279.56
5. Step 5: Solve for x
   x = 363,435,090,299,279.56/21,445,828.82
6. Step 6: Final answer
   x = 16,946,656.31