Finding the Fourth Proportional to 11,123.74, 15,338.18 and 9,100.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,123.74 : 15,338.18 = 9,100.76 : x
2. Step 2: Convert to fraction form
   11,123.74/15,338.18 = 9,100.76/x
3. Step 3: Cross multiply
   11,123.74x = 15,338.18 × 9,100.76
4. Step 4: Simplify right side
   11,123.74x = 139,589,049.51
5. Step 5: Solve for x
   x = 139,589,049.51/11,123.74
6. Step 6: Final answer
   x = 12,548.76