Finding the Fourth Proportional to 12,535.19, 17,299.03 and 7,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,535.19 : 17,299.03 = 7,158.50 : x
2. Step 2: Convert to fraction form
   12,535.19/17,299.03 = 7,158.50/x
3. Step 3: Cross multiply
   12,535.19x = 17,299.03 × 7,158.50
4. Step 4: Simplify right side
   12,535.19x = 123,835,019.76
5. Step 5: Solve for x
   x = 123,835,019.76/12,535.19
6. Step 6: Final answer
   x = 9,878.99