Finding the Fourth Proportional to 11,875.61, 16,377.59 and 10,663.65

Step by Step Solution

1. Step 1: Write the proportion equation
   11,875.61 : 16,377.59 = 10,663.65 : x
2. Step 2: Convert to fraction form
   11,875.61/16,377.59 = 10,663.65/x
3. Step 3: Cross multiply
   11,875.61x = 16,377.59 × 10,663.65
4. Step 4: Simplify right side
   11,875.61x = 174,644,914.26
5. Step 5: Solve for x
   x = 174,644,914.26/11,875.61
6. Step 6: Final answer
   x = 14,706.18