Finding the Fourth Proportional to 6,660,263.24, 9,989,552.17 and 2,111,355.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,660,263.24 : 9,989,552.17 = 2,111,355.89 : x
2. Step 2: Convert to fraction form
   6,660,263.24/9,989,552.17 = 2,111,355.89/x
3. Step 3: Cross multiply
   6,660,263.24x = 9,989,552.17 × 2,111,355.89
4. Step 4: Simplify right side
   6,660,263.24x = 21,091,499,812,591.78
5. Step 5: Solve for x
   x = 21,091,499,812,591.78/6,660,263.24
6. Step 6: Final answer
   x = 3,166,766.70