Finding the Fourth Proportional to 3,978,404.86, 5,967,649.14 and 3,184,731.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978,404.86 : 5,967,649.14 = 3,184,731.76 : x
2. Step 2: Convert to fraction form
   3,978,404.86/5,967,649.14 = 3,184,731.76/x
3. Step 3: Cross multiply
   3,978,404.86x = 5,967,649.14 × 3,184,731.76
4. Step 4: Simplify right side
   3,978,404.86x = 19,005,361,748,694.68
5. Step 5: Solve for x
   x = 19,005,361,748,694.68/3,978,404.86
6. Step 6: Final answer
   x = 4,777,131.14