Finding the Fourth Proportional to 11,994.71, 17,980.72 and 4,970.39

Step by Step Solution

1. Step 1: Write the proportion equation
   11,994.71 : 17,980.72 = 4,970.39 : x
2. Step 2: Convert to fraction form
   11,994.71/17,980.72 = 4,970.39/x
3. Step 3: Cross multiply
   11,994.71x = 17,980.72 × 4,970.39
4. Step 4: Simplify right side
   11,994.71x = 89,371,088.55
5. Step 5: Solve for x
   x = 89,371,088.55/11,994.71
6. Step 6: Final answer
   x = 7,450.88