Finding the Fourth Proportional to 12,499.82, 18,754.90 and 5,476.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.82 : 18,754.90 = 5,476.20 : x
2. Step 2: Convert to fraction form
   12,499.82/18,754.90 = 5,476.20/x
3. Step 3: Cross multiply
   12,499.82x = 18,754.90 × 5,476.20
4. Step 4: Simplify right side
   12,499.82x = 102,705,569.69
5. Step 5: Solve for x
   x = 102,705,569.69/12,499.82
6. Step 6: Final answer
   x = 8,216.57