Finding the Fourth Proportional to 10,623.15, 14,642.91 and 7,219.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,623.15 : 14,642.91 = 7,219.17 : x
2. Step 2: Convert to fraction form
   10,623.15/14,642.91 = 7,219.17/x
3. Step 3: Cross multiply
   10,623.15x = 14,642.91 × 7,219.17
4. Step 4: Simplify right side
   10,623.15x = 105,709,656.58
5. Step 5: Solve for x
   x = 105,709,656.58/10,623.15
6. Step 6: Final answer
   x = 9,950.88