Finding the Fourth Proportional to 3,942,965.90, 5,368,300.76 and 3,930,820.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942,965.90 : 5,368,300.76 = 3,930,820.76 : x
2. Step 2: Convert to fraction form
   3,942,965.90/5,368,300.76 = 3,930,820.76/x
3. Step 3: Cross multiply
   3,942,965.90x = 5,368,300.76 × 3,930,820.76
4. Step 4: Simplify right side
   3,942,965.90x = 21,101,828,026,836.17
5. Step 5: Solve for x
   x = 21,101,828,026,836.17/3,942,965.90
6. Step 6: Final answer
   x = 5,351,765.29