Finding the Fourth Proportional to 13,377.94, 18,461.55 and 7,788.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,377.94 : 18,461.55 = 7,788.94 : x
2. Step 2: Convert to fraction form
   13,377.94/18,461.55 = 7,788.94/x
3. Step 3: Cross multiply
   13,377.94x = 18,461.55 × 7,788.94
4. Step 4: Simplify right side
   13,377.94x = 143,795,888.31
5. Step 5: Solve for x
   x = 143,795,888.31/13,377.94
6. Step 6: Final answer
   x = 10,748.73