Finding the Fourth Proportional to 12,890,523.72, 17,788,567.73 and 7,089,307.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,890,523.72 : 17,788,567.73 = 7,089,307.56 : x
2. Step 2: Convert to fraction form
   12,890,523.72/17,788,567.73 = 7,089,307.56/x
3. Step 3: Cross multiply
   12,890,523.72x = 17,788,567.73 × 7,089,307.56
4. Step 4: Simplify right side
   12,890,523.72x = 126,108,627,654,414.50
5. Step 5: Solve for x
   x = 126,108,627,654,414.50/12,890,523.72
6. Step 6: Final answer
   x = 9,783,049.19