Finding the Fourth Proportional to 6,513.31, 8,988.42 and 5,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,513.31 : 8,988.42 = 5,018.50 : x
2. Step 2: Convert to fraction form
   6,513.31/8,988.42 = 5,018.50/x
3. Step 3: Cross multiply
   6,513.31x = 8,988.42 × 5,018.50
4. Step 4: Simplify right side
   6,513.31x = 45,108,385.77
5. Step 5: Solve for x
   x = 45,108,385.77/6,513.31
6. Step 6: Final answer
   x = 6,925.57