Finding the Fourth Proportional to 9,389.01, 12,956.72 and 5,663.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.01 : 12,956.72 = 5,663.01 : x
2. Step 2: Convert to fraction form
   9,389.01/12,956.72 = 5,663.01/x
3. Step 3: Cross multiply
   9,389.01x = 12,956.72 × 5,663.01
4. Step 4: Simplify right side
   9,389.01x = 73,374,006.61
5. Step 5: Solve for x
   x = 73,374,006.61/9,389.01
6. Step 6: Final answer
   x = 7,814.88