Finding the Fourth Proportional to 12,298.91, 18,437.42 and 4,505.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.91 : 18,437.42 = 4,505.90 : x
2. Step 2: Convert to fraction form
   12,298.91/18,437.42 = 4,505.90/x
3. Step 3: Cross multiply
   12,298.91x = 18,437.42 × 4,505.90
4. Step 4: Simplify right side
   12,298.91x = 83,077,089.86
5. Step 5: Solve for x
   x = 83,077,089.86/12,298.91
6. Step 6: Final answer
   x = 6,754.84