Finding the Fourth Proportional to 21,978,132.63, 30,329,823.02 and 12,190,075.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,978,132.63 : 30,329,823.02 = 12,190,075.62 : x
2. Step 2: Convert to fraction form
   21,978,132.63/30,329,823.02 = 12,190,075.62/x
3. Step 3: Cross multiply
   21,978,132.63x = 30,329,823.02 × 12,190,075.62
4. Step 4: Simplify right side
   21,978,132.63x = 369,722,836,155,016.75
5. Step 5: Solve for x
   x = 369,722,836,155,016.75/21,978,132.63
6. Step 6: Final answer
   x = 16,822,304.35