Finding the Fourth Proportional to 19,258.83, 28,886.67 and 5,219.51

Step by Step Solution

1. Step 1: Write the proportion equation
   19,258.83 : 28,886.67 = 5,219.51 : x
2. Step 2: Convert to fraction form
   19,258.83/28,886.67 = 5,219.51/x
3. Step 3: Cross multiply
   19,258.83x = 28,886.67 × 5,219.51
4. Step 4: Simplify right side
   19,258.83x = 150,774,118.50
5. Step 5: Solve for x
   x = 150,774,118.50/19,258.83
6. Step 6: Final answer
   x = 7,828.83