Finding the Fourth Proportional to 13,106.12, 18,084.34 and 7,800.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,106.12 : 18,084.34 = 7,800.76 : x
2. Step 2: Convert to fraction form
   13,106.12/18,084.34 = 7,800.76/x
3. Step 3: Cross multiply
   13,106.12x = 18,084.34 × 7,800.76
4. Step 4: Simplify right side
   13,106.12x = 141,071,596.10
5. Step 5: Solve for x
   x = 141,071,596.10/13,106.12
6. Step 6: Final answer
   x = 10,763.80