Finding the Fourth Proportional to 10,870.10, 16,341.60 and 9,266.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,870.10 : 16,341.60 = 9,266.30 : x
2. Step 2: Convert to fraction form
   10,870.10/16,341.60 = 9,266.30/x
3. Step 3: Cross multiply
   10,870.10x = 16,341.60 × 9,266.30
4. Step 4: Simplify right side
   10,870.10x = 151,426,168.08
5. Step 5: Solve for x
   x = 151,426,168.08/10,870.10
6. Step 6: Final answer
   x = 13,930.52