Finding the Fourth Proportional to 13,460.81, 18,536.72 and 10,471.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,460.81 : 18,536.72 = 10,471.61 : x
2. Step 2: Convert to fraction form
   13,460.81/18,536.72 = 10,471.61/x
3. Step 3: Cross multiply
   13,460.81x = 18,536.72 × 10,471.61
4. Step 4: Simplify right side
   13,460.81x = 194,109,157.48
5. Step 5: Solve for x
   x = 194,109,157.48/13,460.81
6. Step 6: Final answer
   x = 14,420.32