Finding the Fourth Proportional to 12,970.06, 17,899.59 and 7,381.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,970.06 : 17,899.59 = 7,381.06 : x
2. Step 2: Convert to fraction form
   12,970.06/17,899.59 = 7,381.06/x
3. Step 3: Cross multiply
   12,970.06x = 17,899.59 × 7,381.06
4. Step 4: Simplify right side
   12,970.06x = 132,117,947.77
5. Step 5: Solve for x
   x = 132,117,947.77/12,970.06
6. Step 6: Final answer
   x = 10,186.38