Finding the Fourth Proportional to 14,087.56, 21,131.58 and 5,326.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,087.56 : 21,131.58 = 5,326.60 : x
2. Step 2: Convert to fraction form
   14,087.56/21,131.58 = 5,326.60/x
3. Step 3: Cross multiply
   14,087.56x = 21,131.58 × 5,326.60
4. Step 4: Simplify right side
   14,087.56x = 112,559,474.03
5. Step 5: Solve for x
   x = 112,559,474.03/14,087.56
6. Step 6: Final answer
   x = 7,989.99