Finding the Fourth Proportional to 11,914.89, 16,409.25 and 11,656.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,914.89 : 16,409.25 = 11,656.61 : x
2. Step 2: Convert to fraction form
   11,914.89/16,409.25 = 11,656.61/x
3. Step 3: Cross multiply
   11,914.89x = 16,409.25 × 11,656.61
4. Step 4: Simplify right side
   11,914.89x = 191,276,145.60
5. Step 5: Solve for x
   x = 191,276,145.60/11,914.89
6. Step 6: Final answer
   x = 16,053.54