Finding the Fourth Proportional to 10,311.56, 14,215.01 and 7,618.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,311.56 : 14,215.01 = 7,618.81 : x
2. Step 2: Convert to fraction form
   10,311.56/14,215.01 = 7,618.81/x
3. Step 3: Cross multiply
   10,311.56x = 14,215.01 × 7,618.81
4. Step 4: Simplify right side
   10,311.56x = 108,301,460.34
5. Step 5: Solve for x
   x = 108,301,460.34/10,311.56
6. Step 6: Final answer
   x = 10,502.92