Finding the Fourth Proportional to 9,978.30, 14,976.71 and 5,051.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.30 : 14,976.71 = 5,051.43 : x
2. Step 2: Convert to fraction form
   9,978.30/14,976.71 = 5,051.43/x
3. Step 3: Cross multiply
   9,978.30x = 14,976.71 × 5,051.43
4. Step 4: Simplify right side
   9,978.30x = 75,653,776.94
5. Step 5: Solve for x
   x = 75,653,776.94/9,978.30
6. Step 6: Final answer
   x = 7,581.83