Finding the Fourth Proportional to 13,018.50, 19,515.78 and 4,696.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.50 : 19,515.78 = 4,696.56 : x
2. Step 2: Convert to fraction form
   13,018.50/19,515.78 = 4,696.56/x
3. Step 3: Cross multiply
   13,018.50x = 19,515.78 × 4,696.56
4. Step 4: Simplify right side
   13,018.50x = 91,657,031.72
5. Step 5: Solve for x
   x = 91,657,031.72/13,018.50
6. Step 6: Final answer
   x = 7,040.52