Finding the Fourth Proportional to 17,736.76, 26,602.63 and 5,258.11

Step by Step Solution

1. Step 1: Write the proportion equation
   17,736.76 : 26,602.63 = 5,258.11 : x
2. Step 2: Convert to fraction form
   17,736.76/26,602.63 = 5,258.11/x
3. Step 3: Cross multiply
   17,736.76x = 26,602.63 × 5,258.11
4. Step 4: Simplify right side
   17,736.76x = 139,879,554.83
5. Step 5: Solve for x
   x = 139,879,554.83/17,736.76
6. Step 6: Final answer
   x = 7,886.42