Finding the Fourth Proportional to 12,267.55, 18,406.23 and 4,877.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,267.55 : 18,406.23 = 4,877.29 : x
2. Step 2: Convert to fraction form
   12,267.55/18,406.23 = 4,877.29/x
3. Step 3: Cross multiply
   12,267.55x = 18,406.23 × 4,877.29
4. Step 4: Simplify right side
   12,267.55x = 89,772,521.52
5. Step 5: Solve for x
   x = 89,772,521.52/12,267.55
6. Step 6: Final answer
   x = 7,317.89