Finding the Fourth Proportional to 6,781,128.84, 10,171,772.24 and 1,988,913.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,781,128.84 : 10,171,772.24 = 1,988,913.69 : x
2. Step 2: Convert to fraction form
   6,781,128.84/10,171,772.24 = 1,988,913.69/x
3. Step 3: Cross multiply
   6,781,128.84x = 10,171,772.24 × 1,988,913.69
4. Step 4: Simplify right side
   6,781,128.84x = 20,230,777,049,753.39
5. Step 5: Solve for x
   x = 20,230,777,049,753.39/6,781,128.84
6. Step 6: Final answer
   x = 2,983,393.70