Finding the Fourth Proportional to 9,091.63, 12,547.47 and 5,112.64

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.63 : 12,547.47 = 5,112.64 : x
2. Step 2: Convert to fraction form
   9,091.63/12,547.47 = 5,112.64/x
3. Step 3: Cross multiply
   9,091.63x = 12,547.47 × 5,112.64
4. Step 4: Simplify right side
   9,091.63x = 64,150,697.02
5. Step 5: Solve for x
   x = 64,150,697.02/9,091.63
6. Step 6: Final answer
   x = 7,056.02