Finding the Fourth Proportional to 9,903.78, 14,855.94 and 4,056.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,903.78 : 14,855.94 = 4,056.30 : x
2. Step 2: Convert to fraction form
   9,903.78/14,855.94 = 4,056.30/x
3. Step 3: Cross multiply
   9,903.78x = 14,855.94 × 4,056.30
4. Step 4: Simplify right side
   9,903.78x = 60,260,149.42
5. Step 5: Solve for x
   x = 60,260,149.42/9,903.78
6. Step 6: Final answer
   x = 6,084.56