Finding the Fourth Proportional to 22,926,969.60, 31,639,216.56 and 12,613,471.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,926,969.60 : 31,639,216.56 = 12,613,471.20 : x
2. Step 2: Convert to fraction form
   22,926,969.60/31,639,216.56 = 12,613,471.20/x
3. Step 3: Cross multiply
   22,926,969.60x = 31,639,216.56 × 12,613,471.20
4. Step 4: Simplify right side
   22,926,969.60x = 399,080,346,870,123.06
5. Step 5: Solve for x
   x = 399,080,346,870,123.06/22,926,969.60
6. Step 6: Final answer
   x = 17,406,589.44