Finding the Fourth Proportional to 21,810,012.84, 30,093,672.42 and 13,105,009.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,810,012.84 : 30,093,672.42 = 13,105,009.26 : x
2. Step 2: Convert to fraction form
   21,810,012.84/30,093,672.42 = 13,105,009.26/x
3. Step 3: Cross multiply
   21,810,012.84x = 30,093,672.42 × 13,105,009.26
4. Step 4: Simplify right side
   21,810,012.84x = 394,377,855,731,506.62
5. Step 5: Solve for x
   x = 394,377,855,731,506.62/21,810,012.84
6. Step 6: Final answer
   x = 18,082,421.99