Finding the Fourth Proportional to 13,072.25, 18,041.24 and 7,767.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,072.25 : 18,041.24 = 7,767.06 : x
2. Step 2: Convert to fraction form
   13,072.25/18,041.24 = 7,767.06/x
3. Step 3: Cross multiply
   13,072.25x = 18,041.24 × 7,767.06
4. Step 4: Simplify right side
   13,072.25x = 140,127,354.72
5. Step 5: Solve for x
   x = 140,127,354.72/13,072.25
6. Step 6: Final answer
   x = 10,719.46