Finding the Fourth Proportional to 8,938.20, 12,322.62 and 7,538.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,938.20 : 12,322.62 = 7,538.52 : x
2. Step 2: Convert to fraction form
   8,938.20/12,322.62 = 7,538.52/x
3. Step 3: Cross multiply
   8,938.20x = 12,322.62 × 7,538.52
4. Step 4: Simplify right side
   8,938.20x = 92,894,317.32
5. Step 5: Solve for x
   x = 92,894,317.32/8,938.20
6. Step 6: Final answer
   x = 10,392.96