Finding the Fourth Proportional to 10,430.72, 14,394.76 and 5,715.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,430.72 : 14,394.76 = 5,715.00 : x
2. Step 2: Convert to fraction form
   10,430.72/14,394.76 = 5,715.00/x
3. Step 3: Cross multiply
   10,430.72x = 14,394.76 × 5,715.00
4. Step 4: Simplify right side
   10,430.72x = 82,266,060.81
5. Step 5: Solve for x
   x = 82,266,060.81/10,430.72
6. Step 6: Final answer
   x = 7,886.90