Finding the Fourth Proportional to 13,576.55, 18,734.69 and 7,526.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,576.55 : 18,734.69 = 7,526.72 : x
2. Step 2: Convert to fraction form
   13,576.55/18,734.69 = 7,526.72/x
3. Step 3: Cross multiply
   13,576.55x = 18,734.69 × 7,526.72
4. Step 4: Simplify right side
   13,576.55x = 141,010,634.61
5. Step 5: Solve for x
   x = 141,010,634.61/13,576.55
6. Step 6: Final answer
   x = 10,386.34