Finding the Fourth Proportional to 13,699.33, 18,905.10 and 7,411.71

Step by Step Solution

1. Step 1: Write the proportion equation
   13,699.33 : 18,905.10 = 7,411.71 : x
2. Step 2: Convert to fraction form
   13,699.33/18,905.10 = 7,411.71/x
3. Step 3: Cross multiply
   13,699.33x = 18,905.10 × 7,411.71
4. Step 4: Simplify right side
   13,699.33x = 140,119,118.72
5. Step 5: Solve for x
   x = 140,119,118.72/13,699.33
6. Step 6: Final answer
   x = 10,228.17