Finding the Fourth Proportional to 17,989.58, 26,980.52 and 10,099.77

Step by Step Solution

1. Step 1: Write the proportion equation
   17,989.58 : 26,980.52 = 10,099.77 : x
2. Step 2: Convert to fraction form
   17,989.58/26,980.52 = 10,099.77/x
3. Step 3: Cross multiply
   17,989.58x = 26,980.52 × 10,099.77
4. Step 4: Simplify right side
   17,989.58x = 272,496,995.98
5. Step 5: Solve for x
   x = 272,496,995.98/17,989.58
6. Step 6: Final answer
   x = 15,147.49