Finding the Fourth Proportional to 9,385,540.86, 12,945,355.56 and 8,613,659.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,385,540.86 : 12,945,355.56 = 8,613,659.76 : x
2. Step 2: Convert to fraction form
   9,385,540.86/12,945,355.56 = 8,613,659.76/x
3. Step 3: Cross multiply
   9,385,540.86x = 12,945,355.56 × 8,613,659.76
4. Step 4: Simplify right side
   9,385,540.86x = 111,506,888,266,064.27
5. Step 5: Solve for x
   x = 111,506,888,266,064.27/9,385,540.86
6. Step 6: Final answer
   x = 11,880,709.91