Finding the Fourth Proportional to 9,312,176.72, 12,850,672.20 and 5,237,786

Step by Step Solution

1. Step 1: Write the proportion equation
   9,312,176.72 : 12,850,672.20 = 5,237,786 : x
2. Step 2: Convert to fraction form
   9,312,176.72/12,850,672.20 = 5,237,786/x
3. Step 3: Cross multiply
   9,312,176.72x = 12,850,672.20 × 5,237,786
4. Step 4: Simplify right side
   9,312,176.72x = 67,309,070,939,749.20
5. Step 5: Solve for x
   x = 67,309,070,939,749.20/9,312,176.72
6. Step 6: Final answer
   x = 7,228,070.62