Finding the Fourth Proportional to 13,507.05, 20,225.91 and 9,341.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,507.05 : 20,225.91 = 9,341.31 : x
2. Step 2: Convert to fraction form
   13,507.05/20,225.91 = 9,341.31/x
3. Step 3: Cross multiply
   13,507.05x = 20,225.91 × 9,341.31
4. Step 4: Simplify right side
   13,507.05x = 188,936,495.34
5. Step 5: Solve for x
   x = 188,936,495.34/13,507.05
6. Step 6: Final answer
   x = 13,987.99