Finding the Fourth Proportional to 10,685.51, 14,751.18 and 7,505.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,685.51 : 14,751.18 = 7,505.55 : x
2. Step 2: Convert to fraction form
   10,685.51/14,751.18 = 7,505.55/x
3. Step 3: Cross multiply
   10,685.51x = 14,751.18 × 7,505.55
4. Step 4: Simplify right side
   10,685.51x = 110,715,719.05
5. Step 5: Solve for x
   x = 110,715,719.05/10,685.51
6. Step 6: Final answer
   x = 10,361.29