Finding the Fourth Proportional to 4,878.78, 7,303.59 and 3,320.34

Step by Step Solution

1. Step 1: Write the proportion equation
   4,878.78 : 7,303.59 = 3,320.34 : x
2. Step 2: Convert to fraction form
   4,878.78/7,303.59 = 3,320.34/x
3. Step 3: Cross multiply
   4,878.78x = 7,303.59 × 3,320.34
4. Step 4: Simplify right side
   4,878.78x = 24,250,402.02
5. Step 5: Solve for x
   x = 24,250,402.02/4,878.78
6. Step 6: Final answer
   x = 4,970.59