Finding the Fourth Proportional to 13,105.60, 18,091.56 and 7,802.26

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.60 : 18,091.56 = 7,802.26 : x
2. Step 2: Convert to fraction form
   13,105.60/18,091.56 = 7,802.26/x
3. Step 3: Cross multiply
   13,105.60x = 18,091.56 × 7,802.26
4. Step 4: Simplify right side
   13,105.60x = 141,155,054.93
5. Step 5: Solve for x
   x = 141,155,054.93/13,105.60
6. Step 6: Final answer
   x = 10,770.59