Finding the Fourth Proportional to 10,855.83, 16,258.23 and 5,291.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.83 : 16,258.23 = 5,291.74 : x
2. Step 2: Convert to fraction form
   10,855.83/16,258.23 = 5,291.74/x
3. Step 3: Cross multiply
   10,855.83x = 16,258.23 × 5,291.74
4. Step 4: Simplify right side
   10,855.83x = 86,034,346.34
5. Step 5: Solve for x
   x = 86,034,346.34/10,855.83
6. Step 6: Final answer
   x = 7,925.17