Finding the Fourth Proportional to 12,496.83, 17,242.43 and 7,458.99

Step by Step Solution

1. Step 1: Write the proportion equation
   12,496.83 : 17,242.43 = 7,458.99 : x
2. Step 2: Convert to fraction form
   12,496.83/17,242.43 = 7,458.99/x
3. Step 3: Cross multiply
   12,496.83x = 17,242.43 × 7,458.99
4. Step 4: Simplify right side
   12,496.83x = 128,611,075.65
5. Step 5: Solve for x
   x = 128,611,075.65/12,496.83
6. Step 6: Final answer
   x = 10,291.50