Finding the Fourth Proportional to 13,576.34, 18,733.83 and 7,909.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,576.34 : 18,733.83 = 7,909.91 : x
2. Step 2: Convert to fraction form
   13,576.34/18,733.83 = 7,909.91/x
3. Step 3: Cross multiply
   13,576.34x = 18,733.83 × 7,909.91
4. Step 4: Simplify right side
   13,576.34x = 148,182,815.59
5. Step 5: Solve for x
   x = 148,182,815.59/13,576.34
6. Step 6: Final answer
   x = 10,914.79