Finding the Fourth Proportional to 9,012,069.77, 12,432,487.43 and 7,980,628.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,012,069.77 : 12,432,487.43 = 7,980,628.73 : x
2. Step 2: Convert to fraction form
   9,012,069.77/12,432,487.43 = 7,980,628.73/x
3. Step 3: Cross multiply
   9,012,069.77x = 12,432,487.43 × 7,980,628.73
4. Step 4: Simplify right side
   9,012,069.77x = 99,219,066,307,059.42
5. Step 5: Solve for x
   x = 99,219,066,307,059.42/9,012,069.77
6. Step 6: Final answer
   x = 11,009,575.92