Finding the Fourth Proportional to 9,056.34, 12,493.98 and 6,402.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,056.34 : 12,493.98 = 6,402.78 : x
2. Step 2: Convert to fraction form
   9,056.34/12,493.98 = 6,402.78/x
3. Step 3: Cross multiply
   9,056.34x = 12,493.98 × 6,402.78
4. Step 4: Simplify right side
   9,056.34x = 79,996,205.26
5. Step 5: Solve for x
   x = 79,996,205.26/9,056.34
6. Step 6: Final answer
   x = 8,833.17