Finding the Fourth Proportional to 13,291.14, 18,341.98 and 7,322.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,291.14 : 18,341.98 = 7,322.78 : x
2. Step 2: Convert to fraction form
   13,291.14/18,341.98 = 7,322.78/x
3. Step 3: Cross multiply
   13,291.14x = 18,341.98 × 7,322.78
4. Step 4: Simplify right side
   13,291.14x = 134,314,284.30
5. Step 5: Solve for x
   x = 134,314,284.30/13,291.14
6. Step 6: Final answer
   x = 10,105.55