Finding the Fourth Proportional to 13,667.08, 20,507.31 and 4,902.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,667.08 : 20,507.31 = 4,902.67 : x
2. Step 2: Convert to fraction form
   13,667.08/20,507.31 = 4,902.67/x
3. Step 3: Cross multiply
   13,667.08x = 20,507.31 × 4,902.67
4. Step 4: Simplify right side
   13,667.08x = 100,540,573.52
5. Step 5: Solve for x
   x = 100,540,573.52/13,667.08
6. Step 6: Final answer
   x = 7,356.40