Finding the Fourth Proportional to 21,224,065.34, 29,280,895.53 and 13,061,131.58

Step by Step Solution

1. Step 1: Write the proportion equation
   21,224,065.34 : 29,280,895.53 = 13,061,131.58 : x
2. Step 2: Convert to fraction form
   21,224,065.34/29,280,895.53 = 13,061,131.58/x
3. Step 3: Cross multiply
   21,224,065.34x = 29,280,895.53 × 13,061,131.58
4. Step 4: Simplify right side
   21,224,065.34x = 382,441,629,297,563.88
5. Step 5: Solve for x
   x = 382,441,629,297,563.88/21,224,065.34
6. Step 6: Final answer
   x = 18,019,244.81