Finding the Fourth Proportional to 3,978,404.88, 5,967,649.16 and 3,184,731.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978,404.88 : 5,967,649.16 = 3,184,731.76 : x
2. Step 2: Convert to fraction form
   3,978,404.88/5,967,649.16 = 3,184,731.76/x
3. Step 3: Cross multiply
   3,978,404.88x = 5,967,649.16 × 3,184,731.76
4. Step 4: Simplify right side
   3,978,404.88x = 19,005,361,812,389.32
5. Step 5: Solve for x
   x = 19,005,361,812,389.32/3,978,404.88
6. Step 6: Final answer
   x = 4,777,131.13