Finding the Fourth Proportional to 13,895.11, 19,134.81 and 12,077.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,895.11 : 19,134.81 = 12,077.31 : x
2. Step 2: Convert to fraction form
   13,895.11/19,134.81 = 12,077.31/x
3. Step 3: Cross multiply
   13,895.11x = 19,134.81 × 12,077.31
4. Step 4: Simplify right side
   13,895.11x = 231,097,080.00
5. Step 5: Solve for x
   x = 231,097,080.00/13,895.11
6. Step 6: Final answer
   x = 16,631.55