Finding the Fourth Proportional to 9,173,789.12, 13,683,285.52 and 7,966,215.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173,789.12 : 13,683,285.52 = 7,966,215.20 : x
2. Step 2: Convert to fraction form
   9,173,789.12/13,683,285.52 = 7,966,215.20/x
3. Step 3: Cross multiply
   9,173,789.12x = 13,683,285.52 × 7,966,215.20
4. Step 4: Simplify right side
   9,173,789.12x = 109,003,997,095,363.91
5. Step 5: Solve for x
   x = 109,003,997,095,363.91/9,173,789.12
6. Step 6: Final answer
   x = 11,882,112.80