Finding the Fourth Proportional to 19,819,141.89, 29,708,626.38 and 13,430,040.09

Step by Step Solution

1. Step 1: Write the proportion equation
   19,819,141.89 : 29,708,626.38 = 13,430,040.09 : x
2. Step 2: Convert to fraction form
   19,819,141.89/29,708,626.38 = 13,430,040.09/x
3. Step 3: Cross multiply
   19,819,141.89x = 29,708,626.38 × 13,430,040.09
4. Step 4: Simplify right side
   19,819,141.89x = 398,988,043,302,231.56
5. Step 5: Solve for x
   x = 398,988,043,302,231.56/19,819,141.89
6. Step 6: Final answer
   x = 20,131,448.96