Finding the Fourth Proportional to 15,527.17, 21,427.88 and 8,453.98

Step by Step Solution

1. Step 1: Write the proportion equation
   15,527.17 : 21,427.88 = 8,453.98 : x
2. Step 2: Convert to fraction form
   15,527.17/21,427.88 = 8,453.98/x
3. Step 3: Cross multiply
   15,527.17x = 21,427.88 × 8,453.98
4. Step 4: Simplify right side
   15,527.17x = 181,150,719.55
5. Step 5: Solve for x
   x = 181,150,719.55/15,527.17
6. Step 6: Final answer
   x = 11,666.70