Finding the Fourth Proportional to 6,488.51, 8,925.81 and 5,688.23

Step by Step Solution

1. Step 1: Write the proportion equation
   6,488.51 : 8,925.81 = 5,688.23 : x
2. Step 2: Convert to fraction form
   6,488.51/8,925.81 = 5,688.23/x
3. Step 3: Cross multiply
   6,488.51x = 8,925.81 × 5,688.23
4. Step 4: Simplify right side
   6,488.51x = 50,772,060.22
5. Step 5: Solve for x
   x = 50,772,060.22/6,488.51
6. Step 6: Final answer
   x = 7,824.92