Finding the Fourth Proportional to 13,116.58, 18,100.01 and 7,738.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,116.58 : 18,100.01 = 7,738.74 : x
2. Step 2: Convert to fraction form
   13,116.58/18,100.01 = 7,738.74/x
3. Step 3: Cross multiply
   13,116.58x = 18,100.01 × 7,738.74
4. Step 4: Simplify right side
   13,116.58x = 140,071,247.20
5. Step 5: Solve for x
   x = 140,071,247.20/13,116.58
6. Step 6: Final answer
   x = 10,678.94