Finding the Fourth Proportional to 13,129.98, 19,696.18 and 5,230.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,129.98 : 19,696.18 = 5,230.59 : x
2. Step 2: Convert to fraction form
   13,129.98/19,696.18 = 5,230.59/x
3. Step 3: Cross multiply
   13,129.98x = 19,696.18 × 5,230.59
4. Step 4: Simplify right side
   13,129.98x = 103,022,642.15
5. Step 5: Solve for x
   x = 103,022,642.15/13,129.98
6. Step 6: Final answer
   x = 7,846.37