Finding the Fourth Proportional to 12,496.86, 18,751.40 and 5,475.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,496.86 : 18,751.40 = 5,475.91 : x
2. Step 2: Convert to fraction form
   12,496.86/18,751.40 = 5,475.91/x
3. Step 3: Cross multiply
   12,496.86x = 18,751.40 × 5,475.91
4. Step 4: Simplify right side
   12,496.86x = 102,680,978.77
5. Step 5: Solve for x
   x = 102,680,978.77/12,496.86
6. Step 6: Final answer
   x = 8,216.54