Finding the Fourth Proportional to 21,930,435.30, 30,267,167.86 and 12,636,225.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,930,435.30 : 30,267,167.86 = 12,636,225.96 : x
2. Step 2: Convert to fraction form
   21,930,435.30/30,267,167.86 = 12,636,225.96/x
3. Step 3: Cross multiply
   21,930,435.30x = 30,267,167.86 × 12,636,225.96
4. Step 4: Simplify right side
   21,930,435.30x = 382,462,772,248,209.69
5. Step 5: Solve for x
   x = 382,462,772,248,209.69/21,930,435.30
6. Step 6: Final answer
   x = 17,439,816.72