Finding the Fourth Proportional to 12,970.63, 17,896.59 and 7,662.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,970.63 : 17,896.59 = 7,662.70 : x
2. Step 2: Convert to fraction form
   12,970.63/17,896.59 = 7,662.70/x
3. Step 3: Cross multiply
   12,970.63x = 17,896.59 × 7,662.70
4. Step 4: Simplify right side
   12,970.63x = 137,136,200.19
5. Step 5: Solve for x
   x = 137,136,200.19/12,970.63
6. Step 6: Final answer
   x = 10,572.82