Finding the Fourth Proportional to 9,970.35, 13,748.61 and 7,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970.35 : 13,748.61 = 7,448.50 : x
2. Step 2: Convert to fraction form
   9,970.35/13,748.61 = 7,448.50/x
3. Step 3: Cross multiply
   9,970.35x = 13,748.61 × 7,448.50
4. Step 4: Simplify right side
   9,970.35x = 102,406,521.59
5. Step 5: Solve for x
   x = 102,406,521.59/9,970.35
6. Step 6: Final answer
   x = 10,271.11