Finding the Fourth Proportional to 11,669.32, 17,488.35 and 10,921.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,669.32 : 17,488.35 = 10,921.98 : x
2. Step 2: Convert to fraction form
   11,669.32/17,488.35 = 10,921.98/x
3. Step 3: Cross multiply
   11,669.32x = 17,488.35 × 10,921.98
4. Step 4: Simplify right side
   11,669.32x = 191,007,481.33
5. Step 5: Solve for x
   x = 191,007,481.33/11,669.32
6. Step 6: Final answer
   x = 16,368.34