Finding the Fourth Proportional to 13,066.32, 18,030.78 and 7,757.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066.32 : 18,030.78 = 7,757.76 : x
2. Step 2: Convert to fraction form
   13,066.32/18,030.78 = 7,757.76/x
3. Step 3: Cross multiply
   13,066.32x = 18,030.78 × 7,757.76
4. Step 4: Simplify right side
   13,066.32x = 139,878,463.85
5. Step 5: Solve for x
   x = 139,878,463.85/13,066.32
6. Step 6: Final answer
   x = 10,705.27