Finding the Fourth Proportional to 13,066.29, 19,566.60 and 10,146.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066.29 : 19,566.60 = 10,146.63 : x
2. Step 2: Convert to fraction form
   13,066.29/19,566.60 = 10,146.63/x
3. Step 3: Cross multiply
   13,066.29x = 19,566.60 × 10,146.63
4. Step 4: Simplify right side
   13,066.29x = 198,535,050.56
5. Step 5: Solve for x
   x = 198,535,050.56/13,066.29
6. Step 6: Final answer
   x = 15,194.45