Finding the Fourth Proportional to 12,655.98, 18,984.24 and 5,258.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,655.98 : 18,984.24 = 5,258.34 : x
2. Step 2: Convert to fraction form
   12,655.98/18,984.24 = 5,258.34/x
3. Step 3: Cross multiply
   12,655.98x = 18,984.24 × 5,258.34
4. Step 4: Simplify right side
   12,655.98x = 99,825,588.56
5. Step 5: Solve for x
   x = 99,825,588.56/12,655.98
6. Step 6: Final answer
   x = 7,887.62