Finding the Fourth Proportional to 13,201.89, 19,800.72 and 4,317.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,201.89 : 19,800.72 = 4,317.15 : x
2. Step 2: Convert to fraction form
   13,201.89/19,800.72 = 4,317.15/x
3. Step 3: Cross multiply
   13,201.89x = 19,800.72 × 4,317.15
4. Step 4: Simplify right side
   13,201.89x = 85,482,678.35
5. Step 5: Solve for x
   x = 85,482,678.35/13,201.89
6. Step 6: Final answer
   x = 6,475.03