Finding the Fourth Proportional to 13,477.39, 18,598.61 and 7,509.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,477.39 : 18,598.61 = 7,509.31 : x
2. Step 2: Convert to fraction form
   13,477.39/18,598.61 = 7,509.31/x
3. Step 3: Cross multiply
   13,477.39x = 18,598.61 × 7,509.31
4. Step 4: Simplify right side
   13,477.39x = 139,662,700.34
5. Step 5: Solve for x
   x = 139,662,700.34/13,477.39
6. Step 6: Final answer
   x = 10,362.74