Finding the Fourth Proportional to 9,870.60, 14,699.88 and 9,444.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,870.60 : 14,699.88 = 9,444.12 : x
2. Step 2: Convert to fraction form
   9,870.60/14,699.88 = 9,444.12/x
3. Step 3: Cross multiply
   9,870.60x = 14,699.88 × 9,444.12
4. Step 4: Simplify right side
   9,870.60x = 138,827,430.71
5. Step 5: Solve for x
   x = 138,827,430.71/9,870.60
6. Step 6: Final answer
   x = 14,064.74