Finding the Fourth Proportional to 13,992.29, 19,308.88 and 7,618.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,992.29 : 19,308.88 = 7,618.77 : x
2. Step 2: Convert to fraction form
   13,992.29/19,308.88 = 7,618.77/x
3. Step 3: Cross multiply
   13,992.29x = 19,308.88 × 7,618.77
4. Step 4: Simplify right side
   13,992.29x = 147,109,925.20
5. Step 5: Solve for x
   x = 147,109,925.20/13,992.29
6. Step 6: Final answer
   x = 10,513.64