Finding the Fourth Proportional to 13,148.12, 18,144.83 and 7,180.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,148.12 : 18,144.83 = 7,180.10 : x
2. Step 2: Convert to fraction form
   13,148.12/18,144.83 = 7,180.10/x
3. Step 3: Cross multiply
   13,148.12x = 18,144.83 × 7,180.10
4. Step 4: Simplify right side
   13,148.12x = 130,281,693.88
5. Step 5: Solve for x
   x = 130,281,693.88/13,148.12
6. Step 6: Final answer
   x = 9,908.77