Finding the Fourth Proportional to 12,748.17, 17,598.87 and 7,970.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,748.17 : 17,598.87 = 7,970.77 : x
2. Step 2: Convert to fraction form
   12,748.17/17,598.87 = 7,970.77/x
3. Step 3: Cross multiply
   12,748.17x = 17,598.87 × 7,970.77
4. Step 4: Simplify right side
   12,748.17x = 140,276,501.03
5. Step 5: Solve for x
   x = 140,276,501.03/12,748.17
6. Step 6: Final answer
   x = 11,003.66