Finding the Fourth Proportional to 13,788.45, 19,028.16 and 7,500.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,788.45 : 19,028.16 = 7,500.81 : x
2. Step 2: Convert to fraction form
   13,788.45/19,028.16 = 7,500.81/x
3. Step 3: Cross multiply
   13,788.45x = 19,028.16 × 7,500.81
4. Step 4: Simplify right side
   13,788.45x = 142,726,612.81
5. Step 5: Solve for x
   x = 142,726,612.81/13,788.45
6. Step 6: Final answer
   x = 10,351.17