Finding the Fourth Proportional to 13,526.28, 18,665.60 and 7,556.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,526.28 : 18,665.60 = 7,556.76 : x
2. Step 2: Convert to fraction form
   13,526.28/18,665.60 = 7,556.76/x
3. Step 3: Cross multiply
   13,526.28x = 18,665.60 × 7,556.76
4. Step 4: Simplify right side
   13,526.28x = 141,051,459.46
5. Step 5: Solve for x
   x = 141,051,459.46/13,526.28
6. Step 6: Final answer
   x = 10,427.96