Finding the Fourth Proportional to 12,561.98, 17,338.59 and 7,529.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,561.98 : 17,338.59 = 7,529.18 : x
2. Step 2: Convert to fraction form
   12,561.98/17,338.59 = 7,529.18/x
3. Step 3: Cross multiply
   12,561.98x = 17,338.59 × 7,529.18
4. Step 4: Simplify right side
   12,561.98x = 130,545,365.06
5. Step 5: Solve for x
   x = 130,545,365.06/12,561.98
6. Step 6: Final answer
   x = 10,392.10