Finding the Fourth Proportional to 13,099.22, 18,078.29 and 7,435.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,099.22 : 18,078.29 = 7,435.50 : x
2. Step 2: Convert to fraction form
   13,099.22/18,078.29 = 7,435.50/x
3. Step 3: Cross multiply
   13,099.22x = 18,078.29 × 7,435.50
4. Step 4: Simplify right side
   13,099.22x = 134,421,048.21
5. Step 5: Solve for x
   x = 134,421,048.21/13,099.22
6. Step 6: Final answer
   x = 10,261.76