Finding the Fourth Proportional to 13,106.18, 18,085.16 and 7,799.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,106.18 : 18,085.16 = 7,799.96 : x
2. Step 2: Convert to fraction form
   13,106.18/18,085.16 = 7,799.96/x
3. Step 3: Cross multiply
   13,106.18x = 18,085.16 × 7,799.96
4. Step 4: Simplify right side
   13,106.18x = 141,063,395.17
5. Step 5: Solve for x
   x = 141,063,395.17/13,106.18
6. Step 6: Final answer
   x = 10,763.12