Finding the Fourth Proportional to 13,911.77, 19,198.31 and 7,538.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,911.77 : 19,198.31 = 7,538.38 : x
2. Step 2: Convert to fraction form
   13,911.77/19,198.31 = 7,538.38/x
3. Step 3: Cross multiply
   13,911.77x = 19,198.31 × 7,538.38
4. Step 4: Simplify right side
   13,911.77x = 144,724,070.45
5. Step 5: Solve for x
   x = 144,724,070.45/13,911.77
6. Step 6: Final answer
   x = 10,402.99