Finding the Fourth Proportional to 12,758.00, 17,599.89 and 10,986.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,758.00 : 17,599.89 = 10,986.53 : x
2. Step 2: Convert to fraction form
   12,758.00/17,599.89 = 10,986.53/x
3. Step 3: Cross multiply
   12,758.00x = 17,599.89 × 10,986.53
4. Step 4: Simplify right side
   12,758.00x = 193,361,631.48
5. Step 5: Solve for x
   x = 193,361,631.48/12,758.00
6. Step 6: Final answer
   x = 15,156.11