Finding the Fourth Proportional to 10,300.84, 14,215.13 and 5,585.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,300.84 : 14,215.13 = 5,585.12 : x
2. Step 2: Convert to fraction form
   10,300.84/14,215.13 = 5,585.12/x
3. Step 3: Cross multiply
   10,300.84x = 14,215.13 × 5,585.12
4. Step 4: Simplify right side
   10,300.84x = 79,393,206.87
5. Step 5: Solve for x
   x = 79,393,206.87/10,300.84
6. Step 6: Final answer
   x = 7,707.45