Finding the Fourth Proportional to 11,667.21, 17,500.78 and 2,902.13

Step by Step Solution

1. Step 1: Write the proportion equation
   11,667.21 : 17,500.78 = 2,902.13 : x
2. Step 2: Convert to fraction form
   11,667.21/17,500.78 = 2,902.13/x
3. Step 3: Cross multiply
   11,667.21x = 17,500.78 × 2,902.13
4. Step 4: Simplify right side
   11,667.21x = 50,789,451.16
5. Step 5: Solve for x
   x = 50,789,451.16/11,667.21
6. Step 6: Final answer
   x = 4,353.18