Finding the Fourth Proportional to 13,018.37, 19,516.61 and 10,547.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.37 : 19,516.61 = 10,547.06 : x
2. Step 2: Convert to fraction form
   13,018.37/19,516.61 = 10,547.06/x
3. Step 3: Cross multiply
   13,018.37x = 19,516.61 × 10,547.06
4. Step 4: Simplify right side
   13,018.37x = 205,842,931.83
5. Step 5: Solve for x
   x = 205,842,931.83/13,018.37
6. Step 6: Final answer
   x = 15,811.73