Finding the Fourth Proportional to 13,978.58, 19,290.29 and 7,605.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978.58 : 19,290.29 = 7,605.36 : x
2. Step 2: Convert to fraction form
   13,978.58/19,290.29 = 7,605.36/x
3. Step 3: Cross multiply
   13,978.58x = 19,290.29 × 7,605.36
4. Step 4: Simplify right side
   13,978.58x = 146,709,561.93
5. Step 5: Solve for x
   x = 146,709,561.93/13,978.58
6. Step 6: Final answer
   x = 10,495.32