Finding the Fourth Proportional to 19,788.90, 29,684.89 and 5,749.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,788.90 : 29,684.89 = 5,749.15 : x
2. Step 2: Convert to fraction form
   19,788.90/29,684.89 = 5,749.15/x
3. Step 3: Cross multiply
   19,788.90x = 29,684.89 × 5,749.15
4. Step 4: Simplify right side
   19,788.90x = 170,662,856.60
5. Step 5: Solve for x
   x = 170,662,856.60/19,788.90
6. Step 6: Final answer
   x = 8,624.17