Finding the Fourth Proportional to 13,100.94, 19,649.93 and 12,330

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.94 : 19,649.93 = 12,330 : x
2. Step 2: Convert to fraction form
   13,100.94/19,649.93 = 12,330/x
3. Step 3: Cross multiply
   13,100.94x = 19,649.93 × 12,330
4. Step 4: Simplify right side
   13,100.94x = 242,283,575.25
5. Step 5: Solve for x
   x = 242,283,575.25/13,100.94
6. Step 6: Final answer
   x = 18,493.60