Finding the Fourth Proportional to 21,839,228.82, 30,149,057.06 and 13,581,951.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,839,228.82 : 30,149,057.06 = 13,581,951.31 : x
2. Step 2: Convert to fraction form
   21,839,228.82/30,149,057.06 = 13,581,951.31/x
3. Step 3: Cross multiply
   21,839,228.82x = 30,149,057.06 × 13,581,951.31
4. Step 4: Simplify right side
   21,839,228.82x = 409,483,025,151,703.50
5. Step 5: Solve for x
   x = 409,483,025,151,703.50/21,839,228.82
6. Step 6: Final answer
   x = 18,749,884.83