Finding the Fourth Proportional to 12,601.01, 18,905.77 and 5,580.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,601.01 : 18,905.77 = 5,580.06 : x
2. Step 2: Convert to fraction form
   12,601.01/18,905.77 = 5,580.06/x
3. Step 3: Cross multiply
   12,601.01x = 18,905.77 × 5,580.06
4. Step 4: Simplify right side
   12,601.01x = 105,495,243.48
5. Step 5: Solve for x
   x = 105,495,243.48/12,601.01
6. Step 6: Final answer
   x = 8,371.97