Finding the Fourth Proportional to 13,422.88, 18,523.82 and 7,455.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,422.88 : 18,523.82 = 7,455.10 : x
2. Step 2: Convert to fraction form
   13,422.88/18,523.82 = 7,455.10/x
3. Step 3: Cross multiply
   13,422.88x = 18,523.82 × 7,455.10
4. Step 4: Simplify right side
   13,422.88x = 138,096,893.21
5. Step 5: Solve for x
   x = 138,096,893.21/13,422.88
6. Step 6: Final answer
   x = 10,288.18