Finding the Fourth Proportional to 9,124.64, 12,591.73 and 5,091.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.64 : 12,591.73 = 5,091.58 : x
2. Step 2: Convert to fraction form
   9,124.64/12,591.73 = 5,091.58/x
3. Step 3: Cross multiply
   9,124.64x = 12,591.73 × 5,091.58
4. Step 4: Simplify right side
   9,124.64x = 64,111,800.63
5. Step 5: Solve for x
   x = 64,111,800.63/9,124.64
6. Step 6: Final answer
   x = 7,026.23