Finding the Fourth Proportional to 13,100.81, 18,076.01 and 7,434.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.81 : 18,076.01 = 7,434.32 : x
2. Step 2: Convert to fraction form
   13,100.81/18,076.01 = 7,434.32/x
3. Step 3: Cross multiply
   13,100.81x = 18,076.01 × 7,434.32
4. Step 4: Simplify right side
   13,100.81x = 134,382,833.19
5. Step 5: Solve for x
   x = 134,382,833.19/13,100.81
6. Step 6: Final answer
   x = 10,257.59