Finding the Fourth Proportional to 10,858.12, 14,976.14 and 7,030.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,858.12 : 14,976.14 = 7,030.72 : x
2. Step 2: Convert to fraction form
   10,858.12/14,976.14 = 7,030.72/x
3. Step 3: Cross multiply
   10,858.12x = 14,976.14 × 7,030.72
4. Step 4: Simplify right side
   10,858.12x = 105,293,047.02
5. Step 5: Solve for x
   x = 105,293,047.02/10,858.12
6. Step 6: Final answer
   x = 9,697.17