Finding the Fourth Proportional to 13,018.83, 19,535.13 and 7,099.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.83 : 19,535.13 = 7,099.98 : x
2. Step 2: Convert to fraction form
   13,018.83/19,535.13 = 7,099.98/x
3. Step 3: Cross multiply
   13,018.83x = 19,535.13 × 7,099.98
4. Step 4: Simplify right side
   13,018.83x = 138,699,032.30
5. Step 5: Solve for x
   x = 138,699,032.30/13,018.83
6. Step 6: Final answer
   x = 10,653.72