Finding the Fourth Proportional to 9,031.53, 12,457.89 and 5,887.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,031.53 : 12,457.89 = 5,887.65 : x
2. Step 2: Convert to fraction form
   9,031.53/12,457.89 = 5,887.65/x
3. Step 3: Cross multiply
   9,031.53x = 12,457.89 × 5,887.65
4. Step 4: Simplify right side
   9,031.53x = 73,347,696.06
5. Step 5: Solve for x
   x = 73,347,696.06/9,031.53
6. Step 6: Final answer
   x = 8,121.29