Finding the Fourth Proportional to 13,139,020.69, 18,000,157.47 and 12,647,783.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,139,020.69 : 18,000,157.47 = 12,647,783.23 : x
2. Step 2: Convert to fraction form
   13,139,020.69/18,000,157.47 = 12,647,783.23/x
3. Step 3: Cross multiply
   13,139,020.69x = 18,000,157.47 × 12,647,783.23
4. Step 4: Simplify right side
   13,139,020.69x = 227,662,089,633,185.53
5. Step 5: Solve for x
   x = 227,662,089,633,185.53/13,139,020.69
6. Step 6: Final answer
   x = 17,327,173.39