Finding the Fourth Proportional to 9,379.82, 12,943.99 and 5,188.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,379.82 : 12,943.99 = 5,188.07 : x
2. Step 2: Convert to fraction form
   9,379.82/12,943.99 = 5,188.07/x
3. Step 3: Cross multiply
   9,379.82x = 12,943.99 × 5,188.07
4. Step 4: Simplify right side
   9,379.82x = 67,154,326.20
5. Step 5: Solve for x
   x = 67,154,326.20/9,379.82
6. Step 6: Final answer
   x = 7,159.45