Finding the Fourth Proportional to 11,123.16, 16,703.82 and 9,876.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,123.16 : 16,703.82 = 9,876.57 : x
2. Step 2: Convert to fraction form
   11,123.16/16,703.82 = 9,876.57/x
3. Step 3: Cross multiply
   11,123.16x = 16,703.82 × 9,876.57
4. Step 4: Simplify right side
   11,123.16x = 164,976,447.50
5. Step 5: Solve for x
   x = 164,976,447.50/11,123.16
6. Step 6: Final answer
   x = 14,831.80