Finding the Fourth Proportional to 12,499.78, 17,250.90 and 7,463.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.78 : 17,250.90 = 7,463.96 : x
2. Step 2: Convert to fraction form
   12,499.78/17,250.90 = 7,463.96/x
3. Step 3: Cross multiply
   12,499.78x = 17,250.90 × 7,463.96
4. Step 4: Simplify right side
   12,499.78x = 128,760,027.56
5. Step 5: Solve for x
   x = 128,760,027.56/12,499.78
6. Step 6: Final answer
   x = 10,300.98