Finding the Fourth Proportional to 13,108.32, 18,086.64 and 7,802.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,108.32 : 18,086.64 = 7,802.10 : x
2. Step 2: Convert to fraction form
   13,108.32/18,086.64 = 7,802.10/x
3. Step 3: Cross multiply
   13,108.32x = 18,086.64 × 7,802.10
4. Step 4: Simplify right side
   13,108.32x = 141,113,773.94
5. Step 5: Solve for x
   x = 141,113,773.94/13,108.32
6. Step 6: Final answer
   x = 10,765.21