Finding the Fourth Proportional to 21,930,437.79, 30,267,171.33 and 12,636,228.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,930,437.79 : 30,267,171.33 = 12,636,228.48 : x
2. Step 2: Convert to fraction form
   21,930,437.79/30,267,171.33 = 12,636,228.48/x
3. Step 3: Cross multiply
   21,930,437.79x = 30,267,171.33 × 12,636,228.48
4. Step 4: Simplify right side
   21,930,437.79x = 382,462,892,369,185.50
5. Step 5: Solve for x
   x = 382,462,892,369,185.50/21,930,437.79
6. Step 6: Final answer
   x = 17,439,820.22