Finding the Fourth Proportional to 19,333.96, 28,978.62 and 8,788.18

Step by Step Solution

1. Step 1: Write the proportion equation
   19,333.96 : 28,978.62 = 8,788.18 : x
2. Step 2: Convert to fraction form
   19,333.96/28,978.62 = 8,788.18/x
3. Step 3: Cross multiply
   19,333.96x = 28,978.62 × 8,788.18
4. Step 4: Simplify right side
   19,333.96x = 254,669,328.71
5. Step 5: Solve for x
   x = 254,669,328.71/19,333.96
6. Step 6: Final answer
   x = 13,172.12