Finding the Fourth Proportional to 10,811.76, 14,921.87 and 7,826.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,811.76 : 14,921.87 = 7,826.51 : x
2. Step 2: Convert to fraction form
   10,811.76/14,921.87 = 7,826.51/x
3. Step 3: Cross multiply
   10,811.76x = 14,921.87 × 7,826.51
4. Step 4: Simplify right side
   10,811.76x = 116,786,164.77
5. Step 5: Solve for x
   x = 116,786,164.77/10,811.76
6. Step 6: Final answer
   x = 10,801.77